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CVE-2012-5642

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag...

7.5 HighFix available

CVE-2012-5642 is a high vulnerability (CVSS 7.5) in Fail2ban, published December 31, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.12%, the 88th percentile. Fixed in fail2ban 0.8.6-3wheezy1.

What does this mean?
Severity
7.5 HighCVSS 2.0, NVD
Exploit chance
3.12%EPSS, 88th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
0.8.6-3wheezy1fail2ban +2 more

Description

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content.

Exploit likelihood

3.12%Up 1.1 points since Feb 4, 2022
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
fail2ban
Debian:12
before 0.8.6-3wheezy1
0.8.6-3wheezy1
fail2ban
Debian:13
before 0.8.6-3wheezy1
0.8.6-3wheezy1
fail2ban
Debian:14
before 0.8.6-3wheezy1
0.8.6-3wheezy1

What each source reports

NVD Score used7.5

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content.

Record
CVE-2012-5642
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Updated
2026-11-02
CVE ListNo score

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content.

Record
CVE-2012-5642
Updated
2026-11-02
EUVDEUVD-2012-5526No score

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content.

Record
EUVD-2012-5526
Updated
2026-11-03
GitHub AdvisoriesGHSA-mxxq-p5rj-2jccNo score

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag...

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content.

Record
GHSA-mxxq-p5rj-2jcc
Updated
2026-11-02
OSVNo score

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content.

Record
CVE-2012-5642
Updated
2026-11-02
OSVDEBIAN-CVE-2012-5642No score

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content.

Record
DEBIAN-CVE-2012-5642
Updated
2026-11-02

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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