#VU43979 Cryptographic issues in PyCrypto - CVE-2012-2417
Published: June 17, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU43979
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2012-2417
CWE-ID: CWE-310
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
PyCrypto
PyCrypto
Software vendor:
GNU
GNU
Description
The vulnerability allows a remote non-authenticated attacker to manipulate data.
PyCrypto before 2.6 does not produce appropriate prime numbers when using an ElGamal scheme to generate a key, which reduces the signature space or public key space and makes it easier for attackers to conduct brute force attacks to obtain the private key.
Remediation
Install update from vendor's website.
External links
- http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081713.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081759.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081789.html
- http://secunia.com/advisories/49263
- http://www.debian.org/security/2012/dsa-2502
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:117
- http://www.openwall.com/lists/oss-security/2012/05/25/1
- http://www.osvdb.org/82279
- http://www.securityfocus.com/bid/53687
- https://bugs.launchpad.net/pycrypto/+bug/985164
- https://exchange.xforce.ibmcloud.com/vulnerabilities/75871
- https://github.com/dlitz/pycrypto/blob/373ea760f21701b162e8c4912a66928ee30d401a/ChangeLog
- https://github.com/Legrandin/pycrypto/commit/9f912f13df99ad3421eff360d6a62d7dbec755c2
- https://hermes.opensuse.org/messages/15083589