CVE-2017-5440

A use-after-free vulnerability during XSLT processing due to a failure to propagate error conditions during matching while evaluating context, leading to objects being used when they no longer exist. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Affected

Mozilla · Thunderbird · Firefox ESR · Firefox

CVSS v3.0 NVD

9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 NVD

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

2.94% chance of exploitation in the next 30 days, 87th percentile

Published

2018-06-11

Updated

2024-08-05

Proof-of-concept exploits (1)

• https://bugzilla.mozilla.org/show_bug.cgi?id=1336832

Security advisories

• https://www.mozilla.org/security/advisories/mfsa2017-10
• https://www.mozilla.org/security/advisories/mfsa2017-11
• https://www.mozilla.org/security/advisories/mfsa2017-12
• https://www.mozilla.org/security/advisories/mfsa2017-13
• http://www.securityfocus.com/bid/97940
• http://www.securitytracker.com/id/1038320
• https://access.redhat.com/errata/RHSA-2017:1104
• https://access.redhat.com/errata/RHSA-2017:1106
• https://access.redhat.com/errata/RHSA-2017:1201
• https://www.debian.org/security/2017/dsa-3831

References

• CVE Record
• NVD entry