CVE-2013-2566 Weak cryptography in n/a

What is CVE-2013-2566?

CVE-2013-2566 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 14 Mar 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The RC4 algorithm, as used in the TLS protocol and SSL protocol, has many single-byte biases, which makes it easier for remote attackers to conduct plaintext-recovery attacks via statistical analysis of ciphertext in a large number of sessions that use the same plaintext.

Weakness: CWE-326, CWE-327

Which versions are affected by CVE-2013-2566?

It affects 16 products.

Products include Canonical Ubuntu Linux, Fujitsu M10-1 Firmware, Fujitsu M10-4 Firmware, Fujitsu M10-4s Firmware, Fujitsu Sparc Enterprise M3000 Firmware, Fujitsu Sparc Enterprise M4000 Firmware and 10 more.

How do I fix CVE-2013-2566?

Change a configuration setting.

Is CVE-2013-2566 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2013-2566 exists.

Public exploit code: 1 Metasploit module.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-f67x-vqh9-8p43.