Vulnerability CVE-2021-23953: Information
Description
If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.
Severity: MEDIUM (4.3) Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| firefox | sisyphus | 85.0-alt1 | 125.0.2-alt1 | ALT-PU-2021-1162-1 | 265371 | Fixed |
| firefox | p10 | 85.0-alt1 | 118.0.2-alt0.p10.1 | ALT-PU-2021-1162-1 | 265371 | Fixed |
| firefox | p9 | 93.0-alt0.p9.1 | 105.0.1-alt0.c9.1 | ALT-PU-2022-1782-1 | 288073 | Fixed |
| firefox | c10f1 | 85.0-alt1 | 112.0.2-alt0.p10.1 | ALT-PU-2021-1162-1 | 265371 | Fixed |
| firefox | c9f2 | 93.0-alt0.p9.1 | 105.0.1-alt0.c9.1 | ALT-PU-2021-3368-1 | 288792 | Fixed |
| firefox-esr | sisyphus | 78.7.0-alt1 | 115.10.0-alt1 | ALT-PU-2021-1158-1 | 265286 | Fixed |
| firefox-esr | p10 | 91.1.0-alt1 | 115.10.0-alt1 | ALT-PU-2021-2881-1 | 284980 | Fixed |
| firefox-esr | p9 | 78.7.0-alt0.1.p9 | 102.11.0-alt0.c9.1 | ALT-PU-2021-1199-1 | 265306 | Fixed |
| firefox-esr | c10f1 | 91.1.0-alt1 | 115.9.1-alt0.c10.1 | ALT-PU-2021-2881-1 | 284980 | Fixed |
| firefox-esr | c9f2 | 91.3.0-alt1.c9.1 | 102.12.0-alt0.c9.1 | ALT-PU-2021-3369-1 | 288792 | Fixed |
| thunderbird | sisyphus | 78.7.0-alt1 | 115.9.0-alt1 | ALT-PU-2021-1160-1 | 265335 | Fixed |
| thunderbird | p10 | 78.7.0-alt1 | 115.9.0-alt1 | ALT-PU-2021-1160-1 | 265335 | Fixed |
| thunderbird | p9 | 78.7.0-alt0.1.p9 | 102.11.0-alt0.c9.1 | ALT-PU-2021-1200-1 | 265306 | Fixed |
| thunderbird | c10f1 | 78.7.0-alt1 | 115.9.0-alt0.c10.1 | ALT-PU-2021-1160-1 | 265335 | Fixed |
| thunderbird | c9f2 | 78.7.0-alt0.1.c9 | 102.11.0-alt0.c9.1 | ALT-PU-2021-1369-1 | 264611 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://www.mozilla.org/security/advisories/mfsa2021-04/ |
|
| https://www.mozilla.org/security/advisories/mfsa2021-05/ |
|
| https://www.mozilla.org/security/advisories/mfsa2021-03/ |
|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1683940 |
|