Debian DSA-2475-1 : openssl - integer underflow

Medium Nessus Plugin ID 59183


The remote Debian host is missing a security-related update.


It was discovered that openssl did not correctly handle explicit Initialization Vectors for CBC encryption modes, as used in TLS 1.1, 1.2, and DTLS. An incorrect calculation would lead to an integer underflow and incorrect memory access, causing denial of service (application crash.)


Upgrade the openssl packages.

For the stable distribution (squeeze), this problem has been fixed in version 0.9.8o-4squeeze13.

See Also

Plugin Details

Severity: Medium

ID: 59183

File Name: debian_DSA-2475.nasl

Version: 1.8

Type: local

Agent: unix

Published: 2012/05/18

Updated: 2020/03/12

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:openssl, cpe:/o:debian:debian_linux:6.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2012/05/17

Reference Information

CVE: CVE-2012-2333

BID: 53476

DSA: 2475