CVE-2009-1391

CVE-2009-1391 is a medium-severity vulnerability in Paul Marquess Compress-raw-zlib Perl Module with a CVSS 2.0 base score of 6.8. 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-189.

Key facts

• Severity: Medium (CVSS 2.0 base score 6.8)
• EPSS exploit prediction: 7% (94th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-189
• Affected product: Paul Marquess Compress-raw-zlib Perl Module
• Published: 2009-06-16
• Last modified: 2026-06-16

Description

Off-by-one error in the inflate function in Zlib.xs in Compress::Raw::Zlib Perl module before 2.017, as used in AMaViS, SpamAssassin, and possibly other products, allows context-dependent attackers to cause a denial of service (hang or crash) via a crafted zlib compressed stream that triggers a heap-based buffer overflow, as exploited in the wild by Trojan.Downloader-71014 in June 2009.

Frequently asked questions

What is CVE-2009-1391?

Off-by-one error in the inflate function in Zlib.xs in Compress::Raw::Zlib Perl module before 2.017, as used in AMaViS, SpamAssassin, and possibly other products, allows context-dependent attackers to cause a denial of service (hang or crash) via a crafted zlib compressed stream that triggers a heap-based buffer overflow, as exploited in the wild by Trojan.Downloader-71014 in June 2009.

How severe is CVE-2009-1391?

CVE-2009-1391 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2009-1391 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1391?

CVE-2009-1391 primarily affects Paul Marquess Compress-raw-zlib Perl Module. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1391?

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

When was CVE-2009-1391 published?

CVE-2009-1391 was published on 2009-06-16 and last updated on 2026-06-16.

References

• http://article.gmane.org/gmane.mail.virus.amavis.user/33635
• http://article.gmane.org/gmane.mail.virus.amavis.user/33638
• http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
• http://osvdb.org/55041
• http://secunia.com/advisories/35422
• http://secunia.com/advisories/35685
• http://secunia.com/advisories/35689
• http://secunia.com/advisories/35876
• http://security.gentoo.org/glsa/glsa-200908-07.xml
• http://thread.gmane.org/gmane.mail.virus.amavis.user/33635
• http://www.mandriva.com/security/advisories?name=MDVSA-2009:157
• http://www.securityfocus.com/bid/35307
• http://www.vupen.com/english/advisories/2009/1571
• https://bugs.gentoo.org/show_bug.cgi?id=273141
• https://bugzilla.redhat.com/show_bug.cgi?id=504386
• https://exchange.xforce.ibmcloud.com/vulnerabilities/51062
• https://usn.ubuntu.com/794-1/
• https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00607.html

Affected products (13)

• cpe:2.3:a:paul_marquess:compress-raw-zlib_perl_module:*:*:*:*:*:*:*:*
• cpe:2.3:a:paul_marquess:compress-raw-zlib_perl_module:2.001:*:*:*:*:*:*:*
• cpe:2.3:a:paul_marquess:compress-raw-zlib_perl_module:2.002:*:*:*:*:*:*:*
• cpe:2.3:a:paul_marquess:compress-raw-zlib_perl_module:2.003:*:*:*:*:*:*:*
• cpe:2.3:a:paul_marquess:compress-raw-zlib_perl_module:2.004:*:*:*:*:*:*:*
• cpe:2.3:a:paul_marquess:compress-raw-zlib_perl_module:2.005:*:*:*:*:*:*:*
• cpe:2.3:a:paul_marquess:compress-raw-zlib_perl_module:2.006:*:*:*:*:*:*:*
• cpe:2.3:a:paul_marquess:compress-raw-zlib_perl_module:2.008:*:*:*:*:*:*:*
• cpe:2.3:a:paul_marquess:compress-raw-zlib_perl_module:2.009:*:*:*:*:*:*:*
• cpe:2.3:a:paul_marquess:compress-raw-zlib_perl_module:2.010:*:*:*:*:*:*:*
• cpe:2.3:a:paul_marquess:compress-raw-zlib_perl_module:2.011:*:*:*:*:*:*:*
• cpe:2.3:a:paul_marquess:compress-raw-zlib_perl_module:2.012:*:*:*:*:*:*:*
• cpe:2.3:a:paul_marquess:compress-raw-zlib_perl_module:2.014:*:*:*:*:*:*:*

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