Vulnerability Monitor

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CVE-2015-6525

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) evbuffer_add, (2) evbuffer_prepend, (3) evbuffer_expand, (4) exbuffer_reserve_space, or (5) evbuffer_read 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.

Published

2015-08-24T14:59:14.133

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-189
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System debian debian_linux 7.1 Yes
Application libevent_project libevent 2.0.1 Yes
Application libevent_project libevent 2.0.2 Yes
Application libevent_project libevent 2.0.3 Yes
Application libevent_project libevent 2.0.4 Yes
Application libevent_project libevent 2.0.5 Yes
Application libevent_project libevent 2.0.6 Yes
Application libevent_project libevent 2.0.7 Yes
Application libevent_project libevent 2.0.8 Yes
Application libevent_project libevent 2.0.9 Yes
Application libevent_project libevent 2.0.10 Yes
Application libevent_project libevent 2.0.11 Yes
Application libevent_project libevent 2.0.12 Yes
Application libevent_project libevent 2.0.13 Yes
Application libevent_project libevent 2.0.14 Yes
Application libevent_project libevent 2.0.15 Yes
Application libevent_project libevent 2.0.16 Yes
Application libevent_project libevent 2.0.17 Yes
Application libevent_project libevent 2.0.18 Yes
Application libevent_project libevent 2.0.19 Yes
Application libevent_project libevent 2.0.20 Yes
Application libevent_project libevent 2.0.21 Yes
Application libevent_project libevent 2.1.1 Yes
Application libevent_project libevent 2.1.2 Yes
Application libevent_project libevent 2.1.3 Yes
Application libevent_project libevent 2.1.4 Yes
References