CVE-2009-1579

CVE-2009-1579 is a medium-severity vulnerability in Squirrelmail 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-94.

Key facts

• Severity: Medium (CVSS 2.0 base score 6.8)
• EPSS exploit prediction: 3% (87th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-94
• Affected product: Squirrelmail
• Published: 2009-05-14
• Last modified: 2026-06-16

Description

The map_yp_alias function in functions/imap_general.php in SquirrelMail before 1.4.18 and NaSMail before 1.7 allows remote attackers to execute arbitrary commands via shell metacharacters in a username string that is used by the ypmatch program.

Frequently asked questions

What is CVE-2009-1579?

The map_yp_alias function in functions/imap_general.php in SquirrelMail before 1.4.18 and NaSMail before 1.7 allows remote attackers to execute arbitrary commands via shell metacharacters in a username string that is used by the ypmatch program.

How severe is CVE-2009-1579?

CVE-2009-1579 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2009-1579 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1579?

CVE-2009-1579 primarily affects Squirrelmail. In total, 59 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1579?

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

When was CVE-2009-1579 published?

CVE-2009-1579 was published on 2009-05-14 and last updated on 2026-06-16.

References

• http://download.gna.org/nasmail/nasmail-1.7.zip
• http://lists.apple.com/archives/security-announce/2010//Jun/msg00001.html
• http://secunia.com/advisories/35052
• http://secunia.com/advisories/35073
• http://secunia.com/advisories/35140
• http://secunia.com/advisories/35259
• http://secunia.com/advisories/37415
• http://secunia.com/advisories/40220
• http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail/branches/SM-1_4-STABLE/squirrelmail/doc/ChangeLog
• http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail/branches/SM-1_4-STABLE/squirrelmail/functions/imap_general.php?r1=13674&r2=13673&pathrev=13674
• http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail?view=rev&revision=13674
• http://support.apple.com/kb/HT4188
• http://www.debian.org/security/2009/dsa-1802
• http://www.mandriva.com/security/advisories?name=MDVSA-2009:110
• http://www.redhat.com/support/errata/RHSA-2009-1066.html
• http://www.securityfocus.com/bid/34916
• http://www.squirrelmail.org/security/issue/2009-05-10
• http://www.vupen.com/english/advisories/2009/1296
• http://www.vupen.com/english/advisories/2009/3315
• http://www.vupen.com/english/advisories/2010/1481
• https://bugzilla.redhat.com/show_bug.cgi?id=500360
• https://exchange.xforce.ibmcloud.com/vulnerabilities/50461
• https://gna.org/forum/forum.php?forum_id=2146
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10986
• https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00566.html
• https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00572.html
• https://www.redhat.com/archives/fedora-package-announce/2009-May/msg00577.html

Affected products (59)

• cpe:2.3:a:squirrelmail:squirrelmail:*:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.1:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.2:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.3:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.3pre1:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.3pre2:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.4:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.4pre1:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.4pre2:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.5:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.5pre1:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:0.5pre2:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.0:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.0pre1:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.0pre2:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.0pre3:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.2:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.2.0_rc3:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.2.5:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.2.6:*:*:*:*:*:*:*
• cpe:2.3:a:squirrelmail:squirrelmail:1.2.7:*:*:*:*:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

• 171.100.156.38 (ipv4-addr)