converse.js/spec/xss.js

/*global mock */

const $pres = converse.env.$pres;
const sizzle = converse.env.sizzle;
const u = converse.env.utils;

describe("XSS", function () {
    describe("A Chat Message", function () {

        it("will escape IMG payload XSS attempts",
            mock.initConverse(
                ['rosterGroupsFetched', 'chatBoxesFetched'], {},
                async function (done, _converse) {

            spyOn(window, 'alert').and.callThrough();
            await mock.waitForRoster(_converse, 'current');
            await mock.openControlBox(_converse);

            const contact_jid = mock.cur_names[0].replace(/ /g,'.').toLowerCase() + '@montague.lit';
            await mock.openChatBoxFor(_converse, contact_jid)
            const view = _converse.api.chatviews.get(contact_jid);

            let message = "<img src=x onerror=alert('XSS');>";
            await mock.sendMessage(view, message);
            let msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual("&lt;img src=x onerror=alert('XSS');&gt;");
            expect(window.alert).not.toHaveBeenCalled();

            message = "<img src=x onerror=alert('XSS')//";
            await mock.sendMessage(view, message);
            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual("&lt;img src=x onerror=alert('XSS')//");

            message = "<img src=x onerror=alert(String.fromCharCode(88,83,83));>";
            await mock.sendMessage(view, message);
            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual("&lt;img src=x onerror=alert(String.fromCharCode(88,83,83));&gt;");

            message = "<img src=x oneonerrorrror=alert(String.fromCharCode(88,83,83));>";
            await mock.sendMessage(view, message);
            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual("&lt;img src=x oneonerrorrror=alert(String.fromCharCode(88,83,83));&gt;");

            message = "<img src=x:alert(alt) onerror=eval(src) alt=xss>";
            await mock.sendMessage(view, message);
            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual("&lt;img src=x:alert(alt) onerror=eval(src) alt=xss&gt;");

            message = "><img src=x onerror=alert('XSS');>";
            await mock.sendMessage(view, message);
            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual("&gt;&lt;img src=x onerror=alert('XSS');&gt;");

            message = "><img src=x onerror=alert(String.fromCharCode(88,83,83));>";
            await mock.sendMessage(view, message);
            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual("&gt;&lt;img src=x onerror=alert(String.fromCharCode(88,83,83));&gt;");

            expect(window.alert).not.toHaveBeenCalled();
            done();
        }));

        it("will escape SVG payload XSS attempts",
            mock.initConverse(
                ['rosterGroupsFetched', 'chatBoxesFetched'], {},
                async function (done, _converse) {

            spyOn(window, 'alert').and.callThrough();
            await mock.waitForRoster(_converse, 'current');
            await mock.openControlBox(_converse);

            const contact_jid = mock.cur_names[0].replace(/ /g,'.').toLowerCase() + '@montague.lit';
            await mock.openChatBoxFor(_converse, contact_jid)
            const view = _converse.api.chatviews.get(contact_jid);

            let message = "<svgonload=alert(1)>";
            await mock.sendMessage(view, message);
            let msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual('&lt;svgonload=alert(1)&gt;');

            message = "<svg/onload=alert('XSS')>";
            await mock.sendMessage(view, message);
            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual("&lt;svg/onload=alert('XSS')&gt;");

            message = "<svg onload=alert(1)//";
            await mock.sendMessage(view, message);
            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual("&lt;svg onload=alert(1)//");

            message = "<svg/onload=alert(String.fromCharCode(88,83,83))>";
            await mock.sendMessage(view, message);
            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual("&lt;svg/onload=alert(String.fromCharCode(88,83,83))&gt;");

            message = "<svg id=alert(1) onload=eval(id)>";
            await mock.sendMessage(view, message);
            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual("&lt;svg id=alert(1) onload=eval(id)&gt;");

            message = '"><svg/onload=alert(String.fromCharCode(88,83,83))>';
            await mock.sendMessage(view, message);
            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual('"&gt;&lt;svg/onload=alert(String.fromCharCode(88,83,83))&gt;');

            message = '"><svg/onload=alert(/XSS/)';
            await mock.sendMessage(view, message);
            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual('"&gt;&lt;svg/onload=alert(/XSS/)');

            expect(window.alert).not.toHaveBeenCalled();
            done();
        }));

        it("will have properly escaped URLs",
            mock.initConverse(
                ['rosterGroupsFetched', 'chatBoxesFetched'], {},
                async function (done, _converse) {

            await mock.waitForRoster(_converse, 'current');
            await mock.openControlBox(_converse);

            const contact_jid = mock.cur_names[0].replace(/ /g,'.').toLowerCase() + '@montague.lit';
            await mock.openChatBoxFor(_converse, contact_jid)
            const view = _converse.api.chatviews.get(contact_jid);

            let message = "http://www.opkode.com/'onmouseover='alert(1)'whatever";
            await mock.sendMessage(view, message);

            let msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML)
                .toEqual('<a target="_blank" rel="noopener" href="http://www.opkode.com/%27onmouseover=%27alert%281%29%27whatever">http://www.opkode.com/\'onmouseover=\'alert(1)\'whatever</a>');

            message = 'http://www.opkode.com/"onmouseover="alert(1)"whatever';
            await mock.sendMessage(view, message);

            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual('<a target="_blank" rel="noopener" href="http://www.opkode.com/%22onmouseover=%22alert%281%29%22whatever">http://www.opkode.com/"onmouseover="alert(1)"whatever</a>');

            message = "https://en.wikipedia.org/wiki/Ender's_Game";
            await mock.sendMessage(view, message);

            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual('<a target="_blank" rel="noopener" href="https://en.wikipedia.org/wiki/Ender%27s_Game">'+message+'</a>');

            message = "<https://bugs.documentfoundation.org/show_bug.cgi?id=123737>";
            await mock.sendMessage(view, message);

            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual(
                `&lt;<a target="_blank" rel="noopener" href="https://bugs.documentfoundation.org/show_bug.cgi?id=123737">https://bugs.documentfoundation.org/show_bug.cgi?id=123737</a>&gt;`);

            message = '<http://www.opkode.com/"onmouseover="alert(1)"whatever>';
            await mock.sendMessage(view, message);

            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual(
                '&lt;<a target="_blank" rel="noopener" href="http://www.opkode.com/%22onmouseover=%22alert%281%29%22whatever">http://www.opkode.com/"onmouseover="alert(1)"whatever</a>&gt;');

            message = `https://www.google.com/maps/place/Kochstraat+6,+2041+CE+Zandvoort/@52.3775999,4.548971,3a,15y,170.85h,88.39t/data=!3m6!1e1!3m4!1sQ7SdHo_bPLPlLlU8GSGWaQ!2e0!7i13312!8i6656!4m5!3m4!1s0x47c5ec1e56f845ad:0x1de0bc4a5771fb08!8m2!3d52.3773668!4d4.5489388!5m1!1e2`
            await mock.sendMessage(view, message);

            msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
            expect(msg.textContent).toEqual(message);
            expect(msg.innerHTML).toEqual(
                `<a target="_blank" rel="noopener" href="https://www.google.com/maps/place/Kochstraat+6,+2041+CE+Zandvoort/@52.3775999,4.548971,3a,15y,170.85h,88.39t/data=%213m6%211e1%213m4%211sQ7SdHo_bPLPlLlU8GSGWaQ%212e0%217i13312%218i6656%214m5%213m4%211s0x47c5ec1e56f845ad:0x1de0bc4a5771fb08%218m2%213d52.3773668%214d4.5489388%215m1%211e2">https://www.google.com/maps/place/Kochstraat+6,+2041+CE+Zandvoort/@52.3775999,4.548971,3a,15y,170.85h,88.39t/data=!3m6!1e1!3m4!1sQ7SdHo_bPLPlLlU8GSGWaQ!2e0!7i13312!8i6656!4m5!3m4!1s0x47c5ec1e56f845ad:0x1de0bc4a5771fb08!8m2!3d52.3773668!4d4.5489388!5m1!1e2</a>`);
            done();
        }));

        it("will avoid malformed and unsafe urls urls from rendering as anchors",
            mock.initConverse(
                ['rosterGroupsFetched', 'chatBoxesFetched'], {},
                async function (done, _converse) {

            await mock.waitForRoster(_converse, 'current');
            await mock.openControlBox(_converse);

            const contact_jid = mock.cur_names[0].replace(/ /g,'.').toLowerCase() + '@montague.lit';
            await mock.openChatBoxFor(_converse, contact_jid)
            const view = _converse.api.chatviews.get(contact_jid);

            const bad_urls =[
                'http://^$^(*^#$%^_1*(',
                'file://devili.sh'
            ];

            const good_urls =[{
                entered: 'http://www.google.com',
                href: 'http://www.google.com/'
            }, {
                entered: 'https://www.google.com/',
                href: 'https://www.google.com/'
            }, {
                entered: 'www.url.com/something?else=1',
                href: 'http://www.url.com/something?else=1',
            }, {
                entered: 'xmpp://anything/?join',
                href: 'xmpp://anything/?join',
            }, {
                entered: 'WWW.SOMETHING.COM/?x=dKasdDAsd4JAsd3OAJSD23osajAidj',
                href: 'http://WWW.SOMETHING.COM/?x=dKasdDAsd4JAsd3OAJSD23osajAidj',
            }];

            function checkNonParsedURL (url) {
                const msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
                expect(msg.textContent).toEqual(url);
                expect(msg.innerHTML).toEqual(url);
            }

            function checkParsedURL ({ entered, href }) {
                const msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
                expect(msg.textContent).toEqual(entered);
                expect(msg.innerHTML).toEqual(`<a target="_blank" rel="noopener" href="${href}">${entered}</a>`);
            }

            function checkParsedXMPPURL ({ entered, href }) {
                const msg = sizzle('.chat-content .chat-msg:last .chat-msg__text', view.el).pop();
                expect(msg.textContent).toEqual(entered);
                expect(msg.innerHTML).toEqual(`<a target="_blank" rel="noopener" class="open-chatroom" href="${href}">${entered}</a>`);
            }

            await mock.sendMessage(view, bad_urls[0]);
            checkNonParsedURL(bad_urls[0]);

            await mock.sendMessage(view, bad_urls[1]);
            checkNonParsedURL(bad_urls[1]);

            await mock.sendMessage(view, good_urls[0].entered);
            checkParsedURL(good_urls[0]);

            await mock.sendMessage(view, good_urls[1].entered);
            checkParsedURL(good_urls[1]);

            await mock.sendMessage(view, good_urls[2].entered);
            checkParsedURL(good_urls[2]);

            await mock.sendMessage(view, good_urls[3].entered);
            checkParsedXMPPURL(good_urls[3]);

            await mock.sendMessage(view, good_urls[4].entered);
            checkParsedURL(good_urls[4]);

            done();
        }));
    });

    describe("A Groupchat", function () {

        it("escapes occupant nicknames when rendering them, to avoid JS-injection attacks",
                mock.initConverse(['rosterGroupsFetched'], {},
                async function (done, _converse) {

            await mock.openAndEnterChatRoom(_converse, 'lounge@montague.lit', 'romeo');
            /* <presence xmlns="jabber:client" to="jc@chat.example.org/converse.js-17184538"
                *      from="oo@conference.chat.example.org/&lt;img src=&quot;x&quot; onerror=&quot;alert(123)&quot;/&gt;">
                *   <x xmlns="http://jabber.org/protocol/muc#user">
                *    <item jid="jc@chat.example.org/converse.js-17184538" affiliation="owner" role="moderator"/>
                *    <status code="110"/>
                *   </x>
                * </presence>"
                */
            const presence = $pres({
                    to:'romeo@montague.lit/pda',
                    from:"lounge@montague.lit/&lt;img src=&quot;x&quot; onerror=&quot;alert(123)&quot;/&gt;"
            }).c('x').attrs({xmlns:'http://jabber.org/protocol/muc#user'})
                .c('item').attrs({
                    jid: 'someone@montague.lit',
                    role: 'moderator',
                }).up()
                .c('status').attrs({code:'110'}).nodeTree;

            _converse.connection._dataRecv(mock.createRequest(presence));
            const view = _converse.chatboxviews.get('lounge@montague.lit');
            await u.waitUntil(() => view.el.querySelectorAll('li .occupant-nick').length, 500);
            const occupants = view.el.querySelector('.occupant-list').querySelectorAll('li .occupant-nick');
            expect(occupants.length).toBe(2);
            expect(occupants[0].textContent.trim()).toBe("&lt;img src=&quot;x&quot; onerror=&quot;alert(123)&quot;/&gt;");
            done();
        }));

        it("escapes the subject before rendering it, to avoid JS-injection attacks",
            mock.initConverse(
                ['rosterGroupsFetched'], {},
                async function (done, _converse) {

            await mock.openAndEnterChatRoom(_converse, 'jdev@conference.jabber.org', 'jc');
            spyOn(window, 'alert');
            const subject = '<img src="x" onerror="alert(\'XSS\');"/>';
            const view = _converse.chatboxviews.get('jdev@conference.jabber.org');
            view.model.set({'subject': {
                'text': subject,
                'author': 'ralphm'
            }});
            const text = await u.waitUntil(() => view.el.querySelector('.chat-head__desc')?.textContent.trim());
            expect(text).toBe(subject);
            done();
        }));
    });
});