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VuXML ID	Description
7862213c-5152-11e9-8b26-a4badb296695	dovecot -- Buffer overflow reading extension header Aki Tuomi reports: Vulnerability Details: When reading FTS or POP3-UIDL header from dovecot index, the input buffer size is not bound, and data is copied to target structure causing stack overflow. Risk: This can be used for local root privilege escalation or executing arbitrary code in dovecot process context. This requires ability to directly modify dovecot indexes. Steps to reproduce: Produce dovecot.index.log entry that creates an FTS header which has more than 12 bytes of data. Trigger dovecot indexer-worker or run doveadm index. Dovecot will crash. Mitigations: Since 2.3.0 dovecot has been compiled with stack smash protection, ASLR, read-only GOT tables and other techniques that make exploiting this bug much harder. Discovery 2019-02-05 Entry 2019-03-28 dovecot < 2.3.5.1 http://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-7524 https://dovecot.org/list/dovecot-news/2019-March/000401.html CVE-2019-7524

VuXML ID

Description

7862213c-5152-11e9-8b26-a4badb296695

dovecot -- Buffer overflow reading extension header

Aki Tuomi reports:

Vulnerability Details: When reading FTS or POP3-UIDL header from dovecot index, the input buffer size is not bound, and data is copied to target structure causing stack overflow. Risk: This can be used for local root privilege escalation or executing arbitrary code in dovecot process context. This requires ability to directly modify dovecot indexes. Steps to reproduce: Produce dovecot.index.log entry that creates an FTS header which has more than 12 bytes of data. Trigger dovecot indexer-worker or run doveadm index. Dovecot will crash. Mitigations: Since 2.3.0 dovecot has been compiled with stack smash protection, ASLR, read-only GOT tables and other techniques that make exploiting this bug much harder.

Discovery 2019-02-05
Entry 2019-03-28
dovecot

< 2.3.5.1

http://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-7524
https://dovecot.org/list/dovecot-news/2019-March/000401.html
CVE-2019-7524