CVE-2009-0688

CVE-2009-0688 is a high-severity vulnerability in Carnegie Mellon University Cyrus-sasl 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-119.

Key facts

• Severity: High (CVSS 2.0 base score 7.5)
• EPSS exploit prediction: 8% (95th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Carnegie Mellon University Cyrus-sasl
• Published: 2009-05-15
• Last modified: 2026-06-16

Description

Multiple buffer overflows in the CMU Cyrus SASL library before 2.1.23 might allow remote attackers to execute arbitrary code or cause a denial of service (application crash) via strings that are used as input to the sasl_encode64 function in lib/saslutil.c.

Frequently asked questions

What is CVE-2009-0688?

Multiple buffer overflows in the CMU Cyrus SASL library before 2.1.23 might allow remote attackers to execute arbitrary code or cause a denial of service (application crash) via strings that are used as input to the sasl_encode64 function in lib/saslutil.c.

How severe is CVE-2009-0688?

CVE-2009-0688 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2009-0688 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0688?

CVE-2009-0688 primarily affects Carnegie Mellon University Cyrus-sasl. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0688?

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-2009-0688 published?

CVE-2009-0688 was published on 2009-05-15 and last updated on 2026-06-16.

References

• ftp://ftp.andrew.cmu.edu/pub/cyrus-mail/cyrus-sasl-2.1.23.tar.gz
• http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00003.html
• http://osvdb.org/54514
• http://osvdb.org/54515
• http://secunia.com/advisories/35094
• http://secunia.com/advisories/35097
• http://secunia.com/advisories/35102
• http://secunia.com/advisories/35206
• http://secunia.com/advisories/35239
• http://secunia.com/advisories/35321
• http://secunia.com/advisories/35416
• http://secunia.com/advisories/35497
• http://secunia.com/advisories/35746
• http://secunia.com/advisories/39428
• http://security.gentoo.org/glsa/glsa-200907-09.xml
• http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.448834
• http://sunsolve.sun.com/search/document.do?assetkey=1-66-259148-1
• http://sunsolve.sun.com/search/document.do?assetkey=1-66-264248-1
• http://sunsolve.sun.com/search/document.do?assetkey=1-66-273910-1
• http://sunsolve.sun.com/search/document.do?assetkey=1-77-1020755.1-1
• http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021699.1-1
• http://support.apple.com/kb/HT4077
• http://support.avaya.com/elmodocs2/security/ASA-2009-184.htm
• http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0091
• http://www.debian.org/security/2009/dsa-1807
• http://www.kb.cert.org/vuls/id/238019
• http://www.mandriva.com/security/advisories?name=MDVSA-2009:113
• http://www.oracle.com/technetwork/topics/security/cpuapr2010-099504.html
• http://www.redhat.com/support/errata/RHSA-2009-1116.html

Affected products (46)

• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:*:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.5:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.10:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.11:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.13:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.15:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.16:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.20:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.21:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.22:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.23:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.24:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.26:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.27:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:1.5.28:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.5:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.6:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.7:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.8:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.9:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.10:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.11:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.12:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.13:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.14:*:*:*:*:*:*:*
• cpe:2.3:a:carnegie_mellon_university:cyrus-sasl:2.1.15:*:*:*:*:*:*:*

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