Use After Free Affecting nss package, versions <2:3.26.2-1.1+deb9u1
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Test your applications- Snyk ID SNYK-DEBIAN9-NSS-421231
- published 11 Jun 2018
- disclosed 11 Jun 2018
Introduced: 11 Jun 2018
CVE-2017-7805 Open this link in a new tabHow to fix?
Upgrade Debian:9
nss
to version 2:3.26.2-1.1+deb9u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream nss
package and not the nss
package as distributed by Debian
.
See How to fix?
for Debian:9
relevant fixed versions and status.
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.
References
- ADVISORY
- Debian Security Advisory
- Debian Security Advisory
- Debian Security Advisory
- Debian Security Announcement
- Gentoo Security Advisory
- Mozilla Security Advisory
- Mozilla Security Advisory
- Mozilla Security Advisory
- Oracle Security Advisory
- RedHat Bugzilla Bug
- RHSA Security Advisory
- Security Focus
- Security Tracker
- Ubuntu CVE Tracker