Vulmon
Amazon Linux 2 Security Advisory: ALAS-2019-1359
Advisory Release Date: 2019-11-11 17:38 Pacific
Advisory Updated Date: 2019-11-14 03:19 Pacific
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) evbuffer_add, (2) evbuffer_expand, or (3) bufferevent_write 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. (CVE-2014-6272)
Multiple integer overflow flaws were found in the libevent's evbuffer API. An attacker able to make an application pass an excessively long input to libevent using the API could use these flaws to make the application enter an infinite loop, crash, and, possibly, execute arbitrary code. (CVE-2015-6525)
Affected Packages:
libevent
Issue Correction:
Run yum update libevent to update your system.
aarch64:
libevent-2.0.21-4.amzn2.0.3.aarch64
libevent-devel-2.0.21-4.amzn2.0.3.aarch64
libevent-debuginfo-2.0.21-4.amzn2.0.3.aarch64
i686:
libevent-2.0.21-4.amzn2.0.3.i686
libevent-devel-2.0.21-4.amzn2.0.3.i686
libevent-debuginfo-2.0.21-4.amzn2.0.3.i686
noarch:
libevent-doc-2.0.21-4.amzn2.0.3.noarch
src:
libevent-2.0.21-4.amzn2.0.3.src
x86_64:
libevent-2.0.21-4.amzn2.0.3.x86_64
libevent-devel-2.0.21-4.amzn2.0.3.x86_64
libevent-debuginfo-2.0.21-4.amzn2.0.3.x86_64