CVE-2011-1549

CVE-2011-1549 is a medium-severity vulnerability in Gentoo Logrotate with a CVSS 2.0 base score of 6.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

• Severity: Medium (CVSS 2.0 base score 6.3)
• EPSS exploit prediction: 0% (29th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-264
• Affected product: Gentoo Logrotate
• Published: 2011-03-30
• Last modified: 2026-06-16

Description

The default configuration of logrotate on Gentoo Linux uses root privileges to process files in directories that permit non-root write access, which allows local users to conduct symlink and hard link attacks by leveraging logrotate's lack of support for untrusted directories, as demonstrated by directories under /var/log/ for packages.

Frequently asked questions

What is CVE-2011-1549?

The default configuration of logrotate on Gentoo Linux uses root privileges to process files in directories that permit non-root write access, which allows local users to conduct symlink and hard link attacks by leveraging logrotate's lack of support for untrusted directories, as demonstrated by directories under /var/log/ for packages.

How severe is CVE-2011-1549?

CVE-2011-1549 has a CVSS 2.0 base score of 6.3, rated medium severity.

Is CVE-2011-1549 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1549?

CVE-2011-1549 affects Gentoo Logrotate. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-1549?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-1549 published?

CVE-2011-1549 was published on 2011-03-30 and last updated on 2026-06-16.

References

• http://openwall.com/lists/oss-security/2011/03/04/16
• http://openwall.com/lists/oss-security/2011/03/04/17
• http://openwall.com/lists/oss-security/2011/03/04/18
• http://openwall.com/lists/oss-security/2011/03/04/19
• http://openwall.com/lists/oss-security/2011/03/04/22
• http://openwall.com/lists/oss-security/2011/03/04/24
• http://openwall.com/lists/oss-security/2011/03/04/25
• http://openwall.com/lists/oss-security/2011/03/04/26
• http://openwall.com/lists/oss-security/2011/03/04/27
• http://openwall.com/lists/oss-security/2011/03/04/28
• http://openwall.com/lists/oss-security/2011/03/04/29
• http://openwall.com/lists/oss-security/2011/03/04/30
• http://openwall.com/lists/oss-security/2011/03/04/31
• http://openwall.com/lists/oss-security/2011/03/04/32
• http://openwall.com/lists/oss-security/2011/03/04/33
• http://openwall.com/lists/oss-security/2011/03/05/4
• http://openwall.com/lists/oss-security/2011/03/05/6
• http://openwall.com/lists/oss-security/2011/03/05/8
• http://openwall.com/lists/oss-security/2011/03/06/3
• http://openwall.com/lists/oss-security/2011/03/06/4
• http://openwall.com/lists/oss-security/2011/03/06/5
• http://openwall.com/lists/oss-security/2011/03/06/6
• http://openwall.com/lists/oss-security/2011/03/07/11
• http://openwall.com/lists/oss-security/2011/03/07/5
• http://openwall.com/lists/oss-security/2011/03/07/6
• http://openwall.com/lists/oss-security/2011/03/08/5
• http://openwall.com/lists/oss-security/2011/03/10/2
• http://openwall.com/lists/oss-security/2011/03/10/3
• http://openwall.com/lists/oss-security/2011/03/10/6
• http://openwall.com/lists/oss-security/2011/03/10/7

Affected products (1)

• cpe:2.3:a:gentoo:logrotate:*:*:*:*:*:*:*:*

More vulnerabilities in Gentoo Logrotate

• CVE-2011-1154 — Medium (CVSS 6.9): The shred_file function in logrotate.c in logrotate 3.7.9 and earlier might allow context-dependent attackers to…
• CVE-2011-1550 — Medium (CVSS 6.3): The default configuration of logrotate on SUSE openSUSE Factory uses root privileges to process files in directories…
• CVE-2011-1548 — Medium (CVSS 6.3): The default configuration of logrotate on Debian GNU/Linux uses root privileges to process files in directories that…
• CVE-2011-1155 — Low (CVSS 1.9): The writeState function in logrotate.c in logrotate 3.7.9 and earlier might allow context-dependent attackers to cause…
• CVE-2011-1098 — Low (CVSS 1.9): Race condition in the createOutputFile function in logrotate.c in logrotate 3.7.9 and earlier allows local users to…

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