Numeric Errors Affecting libevent-doc package, versions <0:2.0.21-4.amzn2.0.3


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
2.08% (80th percentile)

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  • Snyk IDSNYK-AMZN2-LIBEVENTDOC-1676697
  • published27 Sept 2021
  • disclosed24 Aug 2015

Introduced: 24 Aug 2015

CVE-2014-6272  (opens in a new tab)
CWE-189  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 libevent-doc to version 0:2.0.21-4.amzn2.0.3 or higher.
This issue was patched in ALAS2-2019-1359.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libevent-doc package and not the libevent-doc package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1