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Vulnerability record · CVE-2009-2632 · published 8 September 2009

CVE-2009-2632: Cmu cyrus imap server memory buffer overflow vulnerability

Cmu · Cyrus Imap Server

Buffer overflow in the SIEVE script component (sieve/script.c), as used in cyrus-imapd in Cyrus IMAP Server 2.2.13 and 2.3.14, and Dovecot 1.0 before 1.0.4 and 1.1 before 1.1.7, allows local users to execute arbitrary code and read or modify arbitrary messages via a crafted SIEVE script, related to the incorrect use of the sizeof operator for determining buffer length, combined with an integer signedness error.

4.4 CVSS 2.0 Medium EPSS 0.48% · top 60.8% CWE-119 · Memory buffer overflow
4.4CVSS 2.0 base score
0.48%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
44References
16 Jun 2026Last modified by NVD

Description

Buffer overflow in the SIEVE script component (sieve/script.c), as used in cyrus-imapd in Cyrus IMAP Server 2.2.13 and 2.3.14, and Dovecot 1.0 before 1.0.4 and 1.1 before 1.1.7, allows local users to execute arbitrary code and read or modify arbitrary messages via a crafted SIEVE script, related to the incorrect use of the sizeof operator for determining buffer length, combined with an integer signedness error.

AV:L/AC:M/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://dovecot.org/list/dovecot-news/2009-September/000135.html
http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
http://secunia.com/advisories/36629 Vendor Advisory
http://secunia.com/advisories/36632 Vendor Advisory
http://secunia.com/advisories/36698
http://secunia.com/advisories/36713
http://secunia.com/advisories/36904
http://support.apple.com/kb/HT4077
http://www.debian.org/security/2009/dsa-1881 Patch
http://www.openwall.com/lists/oss-security/2009/09/14/3
http://www.osvdb.org/58103
http://www.securityfocus.com/bid/36296 Patch
http://www.securityfocus.com/bid/36377
http://www.ubuntu.com/usn/USN-838-1
http://www.vupen.com/english/advisories/2009/2559 PatchVendor Advisory
http://www.vupen.com/english/advisories/2009/2641
https://bugzilla.andrew.cmu.edu/cgi-bin/cvsweb.cgi/src/sieve/script.c.diff?r1=1.62&r2=1.62.2.1&only_with_tag=cyrus-imapd
https://lists.andrew.cmu.edu/pipermail/cyrus-cvs/2009-September/001253.html
https://lists.andrew.cmu.edu/pipermail/cyrus-cvs/2009-September/001254.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10082
https://www.redhat.com/archives/fedora-package-announce/2009-September/msg00491.html
http://dovecot.org/list/dovecot-news/2009-September/000135.html
http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
http://secunia.com/advisories/36629 Vendor Advisory
http://secunia.com/advisories/36632 Vendor Advisory
http://secunia.com/advisories/36698
http://secunia.com/advisories/36713
http://secunia.com/advisories/36904
http://support.apple.com/kb/HT4077
http://www.debian.org/security/2009/dsa-1881 Patch
http://www.openwall.com/lists/oss-security/2009/09/14/3
http://www.osvdb.org/58103
http://www.securityfocus.com/bid/36296 Patch
http://www.securityfocus.com/bid/36377
http://www.ubuntu.com/usn/USN-838-1
http://www.vupen.com/english/advisories/2009/2559 PatchVendor Advisory
http://www.vupen.com/english/advisories/2009/2641
https://bugzilla.andrew.cmu.edu/cgi-bin/cvsweb.cgi/src/sieve/script.c.diff?r1=1.62&r2=1.62.2.1&only_with_tag=cyrus-imapd

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-2632), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.