CVE-2017-16803

Current Description

In Libav through 11.11 and 12.x through 12.1, the smacker_decode_tree function in libavcodec/smacker.c does not properly restrict tree recursion, which allows remote attackers to cause a denial of service (bitstream.c:build_table() out-of-bounds read and application crash) via a crafted Smacker stream.

Basic Data

PublishedNovember 13, 2017
Last ModifiedNovember 27, 2018
Assignercve@mitre.org
Data TypeCVE
Data FormatMITRE
Data Version4.0
Problem TypeCWE-119
CVE Data Version4.0

Base Metric V2

CVSS 2 - Version2.0
CVSS 2 - Vector StringAV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS 2 - Access VectorNETWORK
CVSS 2 - Access ComplexityLOW
CVSS 2 - AuthenticationNONE
CVSS 2 - Confidentiality ImpactNONE
CVSS 2 - Availability ImpactPARTIAL
CVSS 2 - Base Score5.0
SeverityMEDIUM
Exploitability Score10.0
Impact Score2.9
Obtain All Privilegefalse
Obtain User Privilegefalse
Obtain Other Privilegefalse

Base Metric V3

CVSS 3 - Version3.0
CVSS 3 - Vector StringCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3 - Attack VectorNETWORK
CVSS 3 - Attack ComplexityLOW
CVSS 3 - Privileges RequiredNONE
CVSS 3 - User InteractionNONE
CVSS 3 - ScopeUNCHANGED
CVSS 3 - Confidentiality ImpactNONE
CVSS 3 - Integrity ImpactNONE
CVSS 3 - Availability ImpactHIGH
CVSS 3 - Base Score7.5
CVSS 3 - Base SeverityHIGH
Exploitability Score3.9
Base SeverityHIGH

Configurations

  • OR - Configuration 1
    Cpe VersionPartVendorProductVersionUpdateEditionLanguageSW EditionTarget SWTarget HWOtherVersion Start IncludingVersion End IncludingVersion Start ExcludingVersion End Excluding
    2.3ApplicationLibavLibav********11.11
    2.3ApplicationLibavLibav12.0*******
    2.3ApplicationLibavLibav12.1*******

Vulnerable Software List

VendorProductVersions
Libav Libav *, 12.0, 12.1

References

NameSourceURLTags
101882http://www.securityfocus.com/bid/101882BIDThird Party Advisory VDB Entry
https://bugzilla.libav.org/show_bug.cgi?id=1098https://bugzilla.libav.org/show_bug.cgi?id=1098CONFIRMIssue Tracking
https://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2fhttps://github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2fCONFIRMIssue Tracking
GLSA-201811-19https://security.gentoo.org/glsa/201811-19GENTOO
DSA-4119https://www.debian.org/security/2018/dsa-4119DEBIAN