CVEvulnerability
CVE-2017-7805
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2018-06-11
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-416
Description
During TLS 1.2 exchanges, handshake hashes are generated which point to a message buffer. This saved data is used for later messages but in some cases, the handshake transcript can exceed the space available in the current buffer, causing the allocation of a new buffer. This leaves a pointer pointing to the old, freed buffer, resulting in a use-after-free when handshake hashes are then calculated afterwards. This can result in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
Affected configurations
• mozilla firefox 52.4.0
• mozilla firefox 56.0
• mozilla thunderbird 52.4.0
• debian debian linux 7.0
• debian debian linux 8.0
• debian debian linux 9.0
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html www.oracle.com
- http://www.securityfocus.com/bid/101059 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039465 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:2832 Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1377618 Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2017/11/msg00000.html Third Party Advisory
- https://security.gentoo.org/glsa/201803-14 Third Party Advisory
- https://www.debian.org/security/2017/dsa-3987 Third Party Advisory
- https://www.debian.org/security/2017/dsa-3998 Third Party Advisory
- https://www.debian.org/security/2017/dsa-4014 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-21/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-22/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-23/ Vendor Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html www.oracle.com
- http://www.securityfocus.com/bid/101059 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039465 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:2832 Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1377618 Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2017/11/msg00000.html Third Party Advisory
- https://security.gentoo.org/glsa/201803-14 Third Party Advisory
- https://www.debian.org/security/2017/dsa-3987 Third Party Advisory
- https://www.debian.org/security/2017/dsa-3998 Third Party Advisory
- https://www.debian.org/security/2017/dsa-4014 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-21/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-22/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-23/ Vendor Advisory