CVE-2019-12874 - Double Free

Severity

75%

Complexity

99%

Confidentiality

106%

An issue was discovered in zlib_decompress_extra in modules/demux/mkv/util.cpp in VideoLAN VLC media player 3.x through 3.0.7. The Matroska demuxer, while parsing a malformed MKV file type, has a double free.

An issue was discovered in zlib_decompress_extra in modules/demux/mkv/util.cpp in VideoLAN VLC media player 3.x through 3.0.7. The Matroska demuxer, while parsing a malformed MKV file type, has a double free.

CVSS 3.0 Base Score 9.8. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P).

Demo Examples

Double Free

CWE-415

Double Free

CWE-415

While contrived, this code should be exploitable on Linux distributions which do not ship with heap-chunk check summing turned on.


               
}
free(buf1R2);

Overview

First reported 5 years ago

2019-06-18 18:15:00

Last updated 5 years ago

2019-06-25 12:15:00

Affected Software

VideoLAN VLC Media Player

References

http://git.videolan.org/?p=vlc.git;a=commit;h=81023659c7de5ac2637b4a879195efef50846102

Mailing List, Patch, Third Party Advisory

openSUSE-SU-2019:1840

openSUSE-SU-2019:1897

openSUSE-SU-2019:1909

openSUSE-SU-2019:2015

108882

GLSA-201908-23

USN-4074-1

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