7.5

CVE-2017-7805

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Mozilla ≫ Firefox Version52.4.0
Mozilla ≫ Firefox Version56.0
Mozilla ≫ Thunderbird Version52.4.0
Debian ≫ Debian Linux Version7.0
Debian ≫ Debian Linux Version8.0
Debian ≫ Debian Linux Version9.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 3.15% 0.863
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 5 10 2.9
AV:N/AC:L/Au:N/C:N/I:N/A:P
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
https://security.gentoo.org/glsa/201803-14
Third Party Advisory
http://www.securitytracker.com/id/1039465
Third Party Advisory
VDB Entry
https://lists.debian.org/debian-lts-announce/2017/11/msg00000.html
Third Party Advisory
https://www.debian.org/security/2017/dsa-3987
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.securityfocus.com/bid/101059
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
Vendor Advisory
Issue Tracking
https://www.debian.org/security/2017/dsa-3998
Third Party Advisory