A vulnerability was found in libevent. There is an out-of-bounds read in the DNS code of Libevent.

Upstream bug:

https://github.com/libevent/libevent/issues/332

Upstream patch:

https://github.com/libevent/libevent/commit/ec65c42052d95d2c23d1d837136d1cf1d9ecef9e

A vulnerability was found in libevent. There is a stack-buffer overflow in evutil.c.

Upstream bug:

https://github.com/libevent/libevent/issues/318

Upstream patch:

https://github.com/libevent/libevent/commit/329acc18a0768c21ba22522f01a5c7f46cacc4d5

A vulnerability was found in libevent. The nameparse() function in libevent's DNS code is vulnerable to a buffer overread.

Upstream bug:

https://github.com/libevent/libevent/issues/317

Upstream patch:

https://github.com/libevent/libevent/commit/96f64a022014a208105ead6c8a7066018449d86d

Multiple integer overflows in the evbuffer API in Libevent 2.0.x before 2.0.22 and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via "insanely large inputs" to the (1) evbufferadd, (2) evbufferprepend, (3) evbufferexpand, (4) exbufferreservespace, or (5) evbufferread function, which triggers a heap-based buffer overflow or an infinite loop. NOTE: this identifier was SPLIT from CVE-2014-6272 per ADT3 due to different affected versions.

Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via "insanely large inputs" to the (1) evbufferadd, (2) evbufferexpand, or (3) buffereventwrite function, which triggers a heap-based buffer overflow or an infinite loop. NOTE: this identifier has been SPLIT per ADT3 due to different affected versions. See CVE-2015-6525 for the functions that are only affected in 2.0 and later.