CVE-2011-1929 Denial of service in n/a
Remote attackers can crash the Dovecot mail server or corrupt mailboxes by sending crafted emails with null characters in headers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-1929?
CVE-2011-1929 is a medium-severity denial of service vulnerability in Dovecot Dovecot, published on 24 May 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
lib-mail/message-header-parser.c in Dovecot 1.2.x before 1.2.17 and 2.0.x before 2.0.13 does not properly handle '\0' characters in header names, which allows remote attackers to cause a denial of service (daemon crash or mailbox corruption) via a crafted e-mail message.
Weakness: CWE-20
Which versions are affected by CVE-2011-1929?
It affects 1 product.
Linux distribution packages (18)
dovecot Red Hat:enterprise_linux:4::as | All versions | 0:0.99.11-10.EL4 |
dovecot-debuginfo Red Hat:enterprise_linux:4::as | All versions | 0:0.99.11-10.EL4 |
dovecot Red Hat:enterprise_linux:4::desktop | All versions | 0:0.99.11-10.EL4 |
dovecot-debuginfo Red Hat:enterprise_linux:4::desktop | All versions | 0:0.99.11-10.EL4 |
dovecot Red Hat:enterprise_linux:4::es | All versions | 0:0.99.11-10.EL4 |
dovecot-debuginfo Red Hat:enterprise_linux:4::es | All versions | 0:0.99.11-10.EL4 |
dovecot Red Hat:enterprise_linux:4::ws | All versions | 0:0.99.11-10.EL4 |
dovecot-debuginfo Red Hat:enterprise_linux:4::ws | All versions | 0:0.99.11-10.EL4 |
dovecot Red Hat:enterprise_linux:5::client_workstation | All versions | 0:1.0.7-7.el5_7.1 |
dovecot-debuginfo Red Hat:enterprise_linux:5::client_workstation | All versions | 0:1.0.7-7.el5_7.1 |
dovecot Red Hat:enterprise_linux:5::server | All versions | 0:1.0.7-7.el5_7.1 |
dovecot-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:1.0.7-7.el5_7.1 |
dovecot Red Hat:enterprise_linux:6::server | All versions | 1:2.0.9-2.el6_1.1 |
dovecot-debuginfo Red Hat:enterprise_linux:6::server | All versions | 1:2.0.9-2.el6_1.1 |
dovecot-devel Red Hat:enterprise_linux:6::server | All versions | 1:2.0.9-2.el6_1.1 |
dovecot-mysql Red Hat:enterprise_linux:6::server | All versions | 1:2.0.9-2.el6_1.1 |
dovecot-pgsql Red Hat:enterprise_linux:6::server | All versions | 1:2.0.9-2.el6_1.1 |
dovecot-pigeonhole Red Hat:enterprise_linux:6::server | All versions | 1:2.0.9-2.el6_1.1 |
Products include Dovecot Dovecot.
How do I fix CVE-2011-1929?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2011-1929 being exploited?
There is no known exploitation of CVE-2011-1929 in the wild and no public exploit code.
Other vulnerabilities in Dovecot Dovecot
Sources
Also known as DEBIAN-CVE-2011-1929, DSA-2252-1, GHSA-8hm3-4p5h-mv6g, RHSA-2011:1187.