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Fencer Vulns
high 7.5

CVE-2009-3235 json

Multiple stack-based buffer overflows in the Sieve plugin in Dovecot 1.0 before 1.0.4 and 1.1 before 1.1.7, as derived from Cyrus libsieve,…

published 2009-09-17 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3218

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.0%
EPSS 4.0% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

Multiple stack-based buffer overflows in the Sieve plugin in Dovecot 1.0 before 1.0.4 and 1.1 before 1.1.7, as derived from Cyrus libsieve, allow context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted SIEVE script, as demonstrated by forwarding an e-mail message to a large number of recipients, a different vulnerability than CVE-2009-2632.

Patch / fix

  • dovecot Debian 14, Debian 13, Debian 12 1:1.2.1-1

debian advisories DEBIAN-CVE-2009-3235

  • cyrus-imapd RHEL 4 2.2.12-10.el4_8.4
  • cyrus-imapd RHEL 5 2.3.7-7.el5_4.3
  • perl-Cyrus RHEL 4 2.2.12-10.el4_8.4
  • cyrus-imapd-nntp RHEL 4 2.2.12-10.el4_8.4
  • cyrus-imapd-perl RHEL 5 2.3.7-7.el5_4.3
  • cyrus-imapd-utils RHEL 4 2.2.12-10.el4_8.4
  • cyrus-imapd-utils RHEL 5 2.3.7-7.el5_4.3
  • cyrus-imapd-murder RHEL 4 2.2.12-10.el4_8.4

red hat advisories RHSA-2009:1459

  • cyrus-imapd openSUSE Tumbleweed 2.4.18-3.4

opensuse advisories openSUSE-SU-2024:10015-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-3235 updated cvss 6.5

cyrus-impad: CMU sieve buffer overflows

  • Red Hat Enterprise Linux (v. 5 server) cyrus-imapd 2.3.7-7.el5_4.3, cyrus-imapd-perl 2.3.7-7.el5_4.3, cyrus-imapd-utils 2.3.7-7.el5_4.3 Red Hat Enterprise Linux AS version 4 perl-Cyrus 2.2.12-10.el4_8.4, cyrus-imapd 2.2.12-10.el4_8.4, cyrus-imapd-nntp 2.2.12-10.el4_8.4, cyrus-imapd-utils 2.2.12-10.el4_8.4, cyrus-imapd-murder 2.2.12-10.el4_8.4 Red Hat Enterprise Linux Desktop version 4 perl-Cyrus 2.2.12-10.el4_8.4, cyrus-imapd 2.2.12-10.el4_8.4, cyrus-imapd-nntp 2.2.12-10.el4_8.4, cyrus-imapd-utils 2.2.12-10.el4_8.4, cyrus-imapd-murder 2.2.12-10.el4_8.4 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) cyrus-imapd 2.3.7-7.el5_4.3, cyrus-imapd-perl 2.3.7-7.el5_4.3, cyrus-imapd-utils 2.3.7-7.el5_4.3 Red Hat Enterprise Linux ES version 4 perl-Cyrus 2.2.12-10.el4_8.4, cyrus-imapd 2.2.12-10.el4_8.4, cyrus-imapd-nntp 2.2.12-10.el4_8.4, cyrus-imapd-utils 2.2.12-10.el4_8.4, cyrus-imapd-murder 2.2.12-10.el4_8.4 Red Hat Enterprise Linux WS version 4 perl-Cyrus 2.2.12-10.el4_8.4, cyrus-imapd 2.2.12-10.el4_8.4, cyrus-imapd-nntp 2.2.12-10.el4_8.4, cyrus-imapd-utils 2.2.12-10.el4_8.4, cyrus-imapd-murder 2.2.12-10.el4_8.4
    fixed: vendor fix RHSA-2009:1459

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.04% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.