SB2016022305 - Security Features in GNU Nettle
Published: February 23, 2016 Updated: July 28, 2020
Security Bulletin ID
SB2016022305
CSH 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 vulnerability.
1) Security Features (CVE-ID: CVE-2015-8804)
CWE-ID: CWE-254 - Security Features
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
x86_64/ecc-384-modp.asm in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-384 NIST elliptic curve, which allows attackers to have unspecified impact via unknown vectors.
Remediation
Install update from vendor's website.
References
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00091.html
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00093.html
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00100.html
- http://rhn.redhat.com/errata/RHSA-2016-2582.html
- http://www.openwall.com/lists/oss-security/2016/02/02/2
- http://www.openwall.com/lists/oss-security/2016/02/03/1
- http://www.ubuntu.com/usn/USN-2897-1
- https://blog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplications-in-Nettle.html
- https://git.lysator.liu.se/nettle/nettle/commit/fa269b6ad06dd13c901dbd84a12e52b918a09cd7
- https://lists.gnu.org/archive/html/info-gnu/2016-01/msg00006.html
- https://lists.lysator.liu.se/pipermail/nettle-bugs/2015/003024.html