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CVE-2014-6272

Disclosure Date: August 24, 2015
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Description

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.

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CVSS V3 Severity and Metrics
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Impact Score:
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Exploitability Score:
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Vector:
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Attack Vector (AV):
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Attack Complexity (AC):
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Privileges Required (PR):
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User Interaction (UI):
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Scope (S):
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Confidentiality (C):
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Integrity (I):
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Availability (A):
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General Information

Vendors

  • debian,
  • libevent project

Products

  • debian linux 7.0,
  • libevent 1.4.0,
  • libevent 1.4.1,
  • libevent 1.4.10,
  • libevent 1.4.11,
  • libevent 1.4.12,
  • libevent 1.4.13,
  • libevent 1.4.14,
  • libevent 1.4.2,
  • libevent 1.4.3,
  • libevent 1.4.4,
  • libevent 1.4.5,
  • libevent 1.4.6,
  • libevent 1.4.7,
  • libevent 1.4.8,
  • libevent 1.4.9,
  • libevent 2.0.1,
  • libevent 2.0.10,
  • libevent 2.0.11,
  • libevent 2.0.12,
  • libevent 2.0.13,
  • libevent 2.0.14,
  • libevent 2.0.15,
  • libevent 2.0.16,
  • libevent 2.0.17,
  • libevent 2.0.18,
  • libevent 2.0.19,
  • libevent 2.0.2,
  • libevent 2.0.20,
  • libevent 2.0.21,
  • libevent 2.0.3,
  • libevent 2.0.4,
  • libevent 2.0.5,
  • libevent 2.0.6,
  • libevent 2.0.7,
  • libevent 2.0.8,
  • libevent 2.0.9,
  • libevent 2.1.1,
  • libevent 2.1.2,
  • libevent 2.1.3,
  • libevent 2.1.4
Technical Analysis