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CVE-2009-3235

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…

Severity
High 7.5
Published
17 Sept 2009
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
4% in the next 30 daysHigher than 90% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Memory buffer errors (CWE-119)
Attack
Over the network · No login needed
Attacker can
Read some data · Change some data · Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Sources
NVD

Description

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.

From NVD.

Affected software

SoftwareAffected versions
DovecotServers and applications · cpe:a:dovecot:dovecot
  • Version 1.1.6
  • Version 1.1.5
  • Version 1.1.4
  • Version 1.1.3
All 11 release lines
  • Version 1.0
  • Version 1.0.1
  • Version 1.0.2
  • Version 1.0.3
  • Version 1.1
  • Version 1.1.1
  • Version 1.1.2
  • Version 1.1.3
  • Version 1.1.4
  • Version 1.1.5
  • Version 1.1.6

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2009-3235
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2009-3235