SB2016022410 - Cryptographic issues in nettle (Alpine package)
Published: February 24, 2016
Security Bulletin ID
SB2016022410
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Cryptographic issues (CVE-ID: CVE-2015-8805)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The ecc_256_modq function in ecc-256.c in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-256 NIST elliptic curve, which allows attackers to have unspecified impact via unknown vectors, a different vulnerability than CVE-2015-8803.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=bc1b8cdb81f24f01d962fc29e48ca02bf09d6ec7
- https://git.alpinelinux.org/aports/commit/?id=dffdb25189c631ad6bfce4965c741df5964e446d
- https://git.alpinelinux.org/aports/commit/?id=775b25076f747d4d008d25adbc59ec3bedd69e39
- https://git.alpinelinux.org/aports/commit/?id=3a2031b005debb4b0e0c83896d3719b53b2ed0b8