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Debian LTS: Security Advisory for opendmarc (DLA-2639-1)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'opendmarc' package(s) announced via the DLA-2639-1 advisory.
Insight
Insight
It was discovered that OpenDMARC, a milter implementation of DMARC, has improper null termination in the function opendmarc_xml_parse that can result in a one-byte heap overflow in opendmarc_xml when parsing a specially crafted DMARC aggregate report. This can cause remote memory corruption when a '\0' byte overwrites the heap metadata of the next chunk and its PREV_INUSE flag.
Affected Software
Affected Software
'opendmarc' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For Debian 9 stretch, this problem has been fixed in version 1.3.2-2+deb9u3. We recommend that you upgrade your opendmarc packages.