CVE-2009-0585

CVE-2009-0585 is a high-severity vulnerability in Joe Shaw Libsoup with a CVSS 2.0 base score of 7.5. 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: High (CVSS 2.0 base score 7.5)
• EPSS exploit prediction: 4% (89th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-189
• Affected product: Joe Shaw Libsoup
• Published: 2009-03-14
• Last modified: 2026-06-16

Description

Integer overflow in the soup_base64_encode function in soup-misc.c in libsoup 2.x.x before 2.2.x, and 2.x before 2.24, allows context-dependent attackers to execute arbitrary code via a long string that is converted to a base64 representation.

Frequently asked questions

What is CVE-2009-0585?

Integer overflow in the soup_base64_encode function in soup-misc.c in libsoup 2.x.x before 2.2.x, and 2.x before 2.24, allows context-dependent attackers to execute arbitrary code via a long string that is converted to a base64 representation.

How severe is CVE-2009-0585?

CVE-2009-0585 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2009-0585 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0585?

CVE-2009-0585 primarily affects Joe Shaw Libsoup. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0585?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2009-0585 published?

CVE-2009-0585 was published on 2009-03-14 and last updated on 2026-06-16.

References

• http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html
• http://ocert.org/patches/2008-015/libsoup-CVE-2009-0585.diff
• http://openwall.com/lists/oss-security/2009/03/12/2
• http://secunia.com/advisories/34310
• http://secunia.com/advisories/34337
• http://secunia.com/advisories/34401
• http://secunia.com/advisories/35065
• http://support.avaya.com/elmodocs2/security/ASA-2009-088.htm
• http://www.debian.org/security/2009/dsa-1748
• http://www.mandriva.com/security/advisories?name=MDVSA-2009:081
• http://www.ocert.org/advisories/ocert-2008-015.html
• http://www.redhat.com/support/errata/RHSA-2009-0344.html
• http://www.securityfocus.com/archive/1/501712/100/0/threaded
• http://www.securityfocus.com/bid/34100
• http://www.ubuntu.com/usn/USN-737-1
• https://exchange.xforce.ibmcloud.com/vulnerabilities/49273
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9599

Affected products (5)

• cpe:2.3:a:joe_shaw:libsoup:2.1:*:*:*:*:*:*:*
• cpe:2.3:a:joe_shaw:libsoup:2.23.1:*:*:*:*:*:*:*
• cpe:2.3:a:joe_shaw:libsoup:2.23.6:*:*:*:*:*:*:*
• cpe:2.3:a:joe_shaw:libsoup:2.23.91:*:*:*:*:*:*:*
• cpe:2.3:a:joe_shaw:libsoup:2.23.92:*:*:*:*:*:*:*

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