SB2013122007 - Credentials management in GNU GnuPG
Published: December 20, 2013 Updated: August 10, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Credentials management (CVE-ID: CVE-2013-4576)
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
GnuPG 1.x before 1.4.16 generates RSA keys using sequences of introductions with certain patterns that introduce a side channel, which allows physically proximate attackers to extract RSA keys via a chosen-ciphertext attack and acoustic cryptanalysis during decryption. NOTE: applications are not typically expected to protect themselves from acoustic side-channel attacks, since this is arguably the responsibility of the physical device. Accordingly, issues of this type would not normally receive a CVE identifier. However, for this issue, the developer has specified a security policy in which GnuPG should offer side-channel resistance, and developer-specified security-policy violations are within the scope of CVE.
Remediation
Install update from vendor's website.
References
- http://lists.gnupg.org/pipermail/gnupg-devel/2013-December/028102.html
- http://osvdb.org/101170
- http://rhn.redhat.com/errata/RHSA-2014-0016.html
- http://seclists.org/oss-sec/2013/q4/520
- http://seclists.org/oss-sec/2013/q4/523
- http://www.cs.tau.ac.il/~tromer/acoustic/
- http://www.debian.org/security/2013/dsa-2821
- http://www.securityfocus.com/bid/64424
- http://www.securitytracker.com/id/1029513
- http://www.tau.ac.il/~tromer/papers/acoustic-20131218.pdf
- http://www.ubuntu.com/usn/USN-2059-1
- https://exchange.xforce.ibmcloud.com/vulnerabilities/89846