Bug 727450 (CVE-2020-13904, CVE-2020-14212)

Summary:	<media-video/ffmpeg-4.2.4: Multiple vulnerabilities (CVE-2020-{13904,14212})
Product:	Gentoo Security	Reporter:	Sam James <sam>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	minor	CC:	media-video
Priority:	Normal	Keywords:	PullRequest
Version:	unspecified	Flags:	nattka: sanity-check+
Hardware:	All
OS:	Linux
URL:	https://trac.ffmpeg.org/ticket/8673
See Also:	https://github.com/gentoo/gentoo/pull/16793
Whiteboard:	B3 [glsa+ cve]
Package list:	=media-video/ffmpeg-4.2.4	Runtime testing required:	---
Bug Depends on:
Bug Blocks:	718012, 719940

Description Sam James archtester

2020-06-07 19:20:43 UTC

Description:
"FFmpeg 4.2.3 has a use-after-free via a crafted EXTINF duration in an m3u8 file because parse_playlist in libavformat/hls.c frees a pointer, and later that pointer is accessed in av_probe_input_format3 in /libavformat/format.c."

Patch: https://patchwork.ffmpeg.org/project/ffmpeg/patch/20200529033905.41926-1-lq@chinaffmpeg.org/

Comment 1 Sam James archtester

2020-06-16 23:11:30 UTC

* CVE-2020-14212

Description:
"FFmpeg through 4.3 has a heap-based buffer overflow in avio_get_str in libavformat/aviobuf.c because dnn_backend_native.c calls ff_dnn_load_model_native and a certain index check is omitted."

Bug: https://trac.ffmpeg.org/ticket/8716

Comment 2 Sam James archtester

2020-07-12 02:27:04 UTC

We'll stabilise this shortly if no objections?

Comment 3 Sam James archtester

2020-07-16 13:00:49 UTC

arm64 stable

Comment 4 Sam James archtester

2020-07-17 00:47:14 UTC

arm stable

Comment 5 Sam James archtester

2020-07-17 03:21:03 UTC

ppc64 stable

Comment 6 Sam James archtester

2020-07-17 14:48:22 UTC

ppc stable

Comment 7 Sam James archtester

2020-07-18 00:30:35 UTC

x86 stable

Comment 8 Sam James archtester

2020-07-18 13:32:42 UTC

amd64 stable

Comment 9 Sam James archtester

2020-07-19 01:49:30 UTC

sparc stable. Please cleanup.

Comment 10 Larry the Git Cow gentoo-dev

2020-07-27 16:40:41 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=5aad0c4b02393043056f044fa39114bc1aa595ae

commit 5aad0c4b02393043056f044fa39114bc1aa595ae
Author:     John Helmert III <jchelmert3@posteo.net>
AuthorDate: 2020-07-23 21:06:52 +0000
Commit:     Sam James <sam@gentoo.org>
CommitDate: 2020-07-27 16:40:18 +0000

    media-video/ffmpeg: security cleanup (drop <4.2.4)
    
    Bug: https://bugs.gentoo.org/711144
    Bug: https://bugs.gentoo.org/718012
    Bug: https://bugs.gentoo.org/719940
    Bug: https://bugs.gentoo.org/727450
    Package-Manager: Portage-3.0.0, Repoman-2.3.23
    Signed-off-by: John Helmert III <jchelmert3@posteo.net>
    Signed-off-by: Sam James <sam@gentoo.org>

 media-video/ffmpeg/Manifest                        |   2 -
 media-video/ffmpeg/ffmpeg-3.4.6-r1.ebuild          | 490 ------------------
 media-video/ffmpeg/ffmpeg-4.2.3.ebuild             | 556 ---------------------
 media-video/ffmpeg/files/chromium.patch            |  36 --
 ...mpeg-3.4.6-fix-building-against-fdk-aac-2.patch |  74 ---
 media-video/ffmpeg/metadata.xml                    |   1 -
 6 files changed, 1159 deletions(-)

Comment 11 Sam James archtester

2020-07-27 16:49:47 UTC

GLSA vote: yes, with bug 718012.

Comment 12 GLSAMaker/CVETool Bot gentoo-dev

2020-07-28 19:43:20 UTC

This issue was resolved and addressed in
 GLSA 202007-58 at https://security.gentoo.org/glsa/202007-58
by GLSA coordinator Sam James (sam_c).