SB2013020606 - Cryptographic issues in openssl (Alpine package)

Description

This security bulletin contains information about 1 security vulnerability.

1) Cryptographic issues (CVE-ID: CVE-2013-0169)

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The TLS protocol 1.1 and 1.2 and the DTLS protocol 1.0 and 1.2, as used in OpenSSL, OpenJDK, PolarSSL, and other products, do not properly consider timing side-channel attacks on a MAC check requirement during the processing of malformed CBC padding, which allows remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, aka the "Lucky Thirteen" issue. Per http://www.openssl.org/news/vulnerabilities.html: Fixed in OpenSSL 1.0.1d (Affected 1.0.1c, 1.0.1b, 1.0.1a, 1.0.1) Fixed in OpenSSL 1.0.0k (Affected 1.0.0j, 1.0.0i, 1.0.0g, 1.0.0f, 1.0.0e, 1.0.0d, 1.0.0c, 1.0.0b, 1.0.0a, 1.0.0) Fixed in OpenSSL 0.9.8y (Affected 0.9.8x, 0.9.8w, 0.9.8v, 0.9.8u, 0.9.8t, 0.9.8s, 0.9.8r, 0.9.8q, 0.9.8p, 0.9.8o, 0.9.8n, 0.9.8m, 0.9.8l, 0.9.8k, 0.9.8j, 0.9.8i, 0.9.8h, 0.9.8g, 0.9.8f, 0.9.8d, 0.9.8c, 0.9.8b, 0.9.8a, 0.9.8) Affected users should upgrade to OpenSSL 1.0.1e, 1.0.0k or 0.9.8y (The fix in 1.0.1d wasn't complete, so please use 1.0.1e or later)

Remediation

Install update from vendor's website.

References

• https://git.alpinelinux.org/aports/commit/?id=f8559a6507d371d02c48f885aa56fcd97f6e0d51
• https://git.alpinelinux.org/aports/commit/?id=a28b6a63c439d13b089908249932a03fa69502de
• https://git.alpinelinux.org/aports/commit/?id=240d4d3c17556c04b8f68fb9ae879f88c8193368
• https://git.alpinelinux.org/aports/commit/?id=ef72eb22bc0649fafef9645108235d26bff0727e