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Sid 1-19709

Message

SERVER-APACHE Apache APR apr_fn match infinite loop denial of service attempt

Summary

Stack consumption vulnerability in the fnmatch implementation in aprfnmatch.c in the Apache Portable Runtime (APR) library before 1.4.3 and the Apache HTTP Server before 2.2.18, and in fnmatch.c in libc in NetBSD 5.1, OpenBSD 4.8, FreeBSD, Apple Mac OS X 10.6, Oracle Solaris 10, and Android, allows context-dependent attackers to cause a denial of service (CPU and memory consumption) via *? sequences in the first argument, as demonstrated by attacks against modautoindex in httpd.

Impact

CVSS base score 4.3 CVSS impact score 2.9 CVSS exploitability score 8.6 confidentialityImpact NONE integrityImpact NONE availabilityImpact NONE

CVE-2011-0419:

CVSS base score 4.3

CVSS impact score 2.9

CVSS exploitability score 8.6

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Detailed information

CVE-2011-0419: Stack consumption vulnerability in the fnmatch implementation in aprfnmatch.c in the Apache Portable Runtime (APR) library before 1.4.3 and the Apache HTTP Server before 2.2.18, and in fnmatch.c in libc in NetBSD 5.1, OpenBSD 4.8, FreeBSD, Apple Mac OS X 10.6, Oracle Solaris 10, and Android, allows context-dependent attackers to cause a denial of service (CPU and memory consumption) via *? sequences in the first argument, as demonstrated by attacks against modautoindex in httpd.

Affected systems

  • apache http_server 0.8.11
  • apache http_server 0.8.14
  • apache http_server 1.0
  • apache http_server 1.0.2
  • apache http_server 1.0.3
  • apache http_server 1.0.5
  • apache http_server 1.1
  • apache http_server 1.1.1
  • apache http_server 1.2
  • apache http_server 1.2.4
  • apache http_server 1.2.5
  • apache http_server 1.2.6
  • apache http_server 1.2.9
  • apache http_server 1.3
  • apache http_server 1.3.0
  • apache http_server 1.3.1
  • apache http_server 1.3.1.1
  • apache http_server 1.3.2
  • apache http_server 1.3.3
  • apache http_server 1.3.4
  • apache http_server 1.3.5
  • apache http_server 1.3.6
  • apache http_server 1.3.7
  • apache http_server 1.3.8
  • apache http_server 1.3.9
  • apache http_server 1.3.10
  • apache http_server 1.3.11
  • apache http_server 1.3.12
  • apache http_server 1.3.13
  • apache http_server 1.3.14
  • apache http_server 1.3.15
  • apache http_server 1.3.16
  • apache http_server 1.3.17
  • apache http_server 1.3.18
  • apache http_server 1.3.19
  • apache http_server 1.3.20
  • apache http_server 1.3.22
  • apache http_server 1.3.23
  • apache http_server 1.3.24
  • apache http_server 1.3.25
  • apache http_server 1.3.26
  • apache http_server 1.3.27
  • apache http_server 1.3.28
  • apache http_server 1.3.29
  • apache http_server 1.3.30
  • apache http_server 1.3.31
  • apache http_server 1.3.32
  • apache http_server 1.3.33
  • apache http_server 1.3.34
  • apache http_server 1.3.35
  • apache http_server 1.3.36
  • apache http_server 1.3.37
  • apache http_server 1.3.38
  • apache http_server 1.3.39
  • apache http_server 1.3.41
  • apache http_server 1.3.42
  • apache http_server 1.3.65
  • apache http_server 1.3.68
  • apache http_server 1.4.0
  • apache http_server 1.99
  • apache http_server 2.0
  • apache http_server 2.0.9
  • apache http_server 2.0.28
  • apache http_server 2.0.32
  • apache http_server 2.0.34
  • apache http_server 2.0.35
  • apache http_server 2.0.36
  • apache http_server 2.0.37
  • apache http_server 2.0.38
  • apache http_server 2.0.39
  • apache http_server 2.0.40
  • apache http_server 2.0.41
  • apache http_server 2.0.42
  • apache http_server 2.0.43
  • apache http_server 2.0.44
  • apache http_server 2.0.45
  • apache http_server 2.0.46
  • apache http_server 2.0.47
  • apache http_server 2.0.48
  • apache http_server 2.0.49
  • apache http_server 2.0.50
  • apache http_server 2.0.51
  • apache http_server 2.0.52
  • apache http_server 2.0.53
  • apache http_server 2.0.54
  • apache http_server 2.0.55
  • apache http_server 2.0.56
  • apache http_server 2.0.57
  • apache http_server 2.0.58
  • apache http_server 2.0.59
  • apache http_server 2.0.60
  • apache http_server 2.0.61
  • apache http_server 2.0.63
  • apache http_server 2.1
  • apache http_server 2.1.1
  • apache http_server 2.1.2
  • apache http_server 2.1.3
  • apache http_server 2.1.4
  • apache http_server 2.1.5
  • apache http_server 2.1.6
  • apache http_server 2.1.7
  • apache http_server 2.1.8
  • apache http_server 2.1.9
  • apache http_server 2.2
  • apache http_server 2.2.0
  • apache http_server 2.2.1
  • apache http_server 2.2.2
  • apache http_server 2.2.3
  • apache http_server 2.2.4
  • apache http_server 2.2.6
  • apache http_server 2.2.8
  • apache http_server 2.2.9
  • apache http_server 2.2.10
  • apache http_server 2.2.11
  • apache http_server 2.2.12
  • apache http_server 2.2.13
  • apache http_server 2.2.14
  • apache http_server 2.2.15
  • apache http_server 2.2.16
  • apache http_server 2.2.17
  • apache portable_runtime 0.9.1
  • apache portable_runtime 0.9.2
  • apache portable_runtime 0.9.2-dev
  • apache portable_runtime 0.9.3
  • apache portable_runtime 0.9.3-dev
  • apache portable_runtime 0.9.4
  • apache portable_runtime 0.9.5
  • apache portable_runtime 0.9.6
  • apache portable_runtime 0.9.7
  • apache portable_runtime 0.9.7-dev
  • apache portable_runtime 0.9.8
  • apache portable_runtime 0.9.9
  • apache portable_runtime 0.9.16-dev
  • apache portable_runtime 1.3.0
  • apache portable_runtime 1.3.1
  • apache portable_runtime 1.3.2
  • apache portable_runtime 1.3.3
  • apache portable_runtime 1.3.4
  • apache portable_runtime 1.3.4-dev
  • apache portable_runtime 1.3.5
  • apache portable_runtime 1.3.6
  • apache portable_runtime 1.3.6-dev
  • apache portable_runtime 1.3.7
  • apache portable_runtime 1.3.8
  • apache portable_runtime 1.3.9
  • apache portable_runtime 1.3.10
  • apache portable_runtime 1.3.11
  • apache portable_runtime 1.3.12
  • apache portable_runtime 1.3.13
  • apache portable_runtime 1.4.0
  • apache portable_runtime 1.4.1
  • apache portable_runtime 1.4.2
  • apple macosx 10.6.0
  • freebsd freebsd *
  • google android *
  • netbsd netbsd 5.1
  • openbsd openbsd 4.8
  • oracle solaris 10

Ease of attack

CVE-2011-0419:

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

False positives

None known

False negatives

None known

Corrective action

Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches.

Contributors

  • Talos research team.
  • This document was generated from data supplied by the national vulnerability database, a product of the national institute of standards and technology.
  • For more information see nvd.

Additional References

  • issues.apache.org/bugzilla/show_bug.cgi?id=51219