Bug 765040 – <media-video/vlc-3.0.12.1: Buffer overread with crafted mkv file (CVE-2020-26664)

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description John Helmert III 2021-01-12 01:09:53 UTC]

CVE-2020-26664:

A vulnerability in EbmlTypeDispatcher::send in VideoLAN VLC media player 3.0.11 allows attackers to trigger a heap-based buffer overflow via a crafted .mkv file.


Fixed in 3.0.12. Please bump.

[Comment 1 Larry the Git Cow 2021-01-12 18:13:49 UTC]

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

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=186788f2eba7c130e38cf6d86116124eb2f57363

commit 186788f2eba7c130e38cf6d86116124eb2f57363
Author:     Sam James <[e-mail]>
AuthorDate: 2021-01-12 17:43:49 +0000
Commit:     Sam James <[e-mail]>
CommitDate: 2021-01-12 18:13:46 +0000

    media-video/vlc: security bump to 3.0.12.1
    
    Bug: https://bugs.gentoo.org/765040
    Bug: https://bugs.gentoo.org/723006
    Package-Manager: Portage-3.0.12, Repoman-3.0.2
    Signed-off-by: Sam James <[e-mail]>

 media-video/vlc/Manifest                 |   1 +
 media-video/vlc/vlc-3.0.12.1-r1.ebuild   | 499 ++++++++++++++++++++++++++++++
 media-video/vlc/vlc-3.0.12.1-r101.ebuild | 505 +++++++++++++++++++++++++++++++
 3 files changed, 1005 insertions(+)

[addCollapseLink(2, 1, 'Toggle comment display'); Comment 2 NATTkA bot 2021-01-12 18:16:52 UTC Comment hidden (obsolete)]

Unable to check for sanity:

> no match for package: media-video/vlc-3.0.12.1

[addCollapseLink(3, 1, 'Toggle comment display'); Comment 3 NATTkA bot 2021-01-12 18:32:59 UTC Comment hidden (obsolete)]

Sanity check failed:

> media-video/vlc-3.0.12.1
>   depend amd64 dev profile default/linux/amd64/17.0/no-multilib/prefix/kernel-3.2+ (6 total)
>     >=net-libs/srt-1.4.2
>   depend amd64 stable profile default/linux/amd64/17.1 (53 total)
>     >=net-libs/srt-1.4.2
>   rdepend amd64 dev profile default/linux/amd64/17.0/no-multilib/prefix/kernel-3.2+ (6 total)
>     >=net-libs/srt-1.4.2
>   rdepend amd64 stable profile default/linux/amd64/17.1 (53 total)
>     >=net-libs/srt-1.4.2

[addCollapseLink(4, 1, 'Toggle comment display'); Comment 4 NATTkA bot 2021-01-17 20:00:52 UTC Comment hidden (obsolete)]

Unable to check for sanity:

> dependent bug #761547 is missing keywords

[Comment 5 Agostino Sarubbo 2021-01-20 07:55:13 UTC]

amd64 stable

[Comment 6 Agostino Sarubbo 2021-01-24 12:11:29 UTC]

x86 stable

[Comment 7 Sam James 2021-01-24 21:59:56 UTC]

arm64 done

[Comment 8 Sam James 2021-01-27 23:31:32 UTC]

- ppc, ppc64 both did -r100 as part of the Lua mega-stable bug, which works for us, as it's not vulnerable, and as the rest of slotted Lua is stable anyway, an unslotted version is undesirable.

- arm doesn't have stable VLC, just srt, so let's move it out of this bug.

[Comment 9 Larry the Git Cow 2021-01-27 23:33:46 UTC]

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

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=076307567eebf29a50f49703a6b371cfb6f5efce

commit 076307567eebf29a50f49703a6b371cfb6f5efce
Author:     Sam James <[e-mail]>
AuthorDate: 2021-01-27 23:33:41 +0000
Commit:     Sam James <[e-mail]>
CommitDate: 2021-01-27 23:33:41 +0000

    media-video/vlc: security cleanup
    
    Bug: https://bugs.gentoo.org/765040
    Package-Manager: Portage-3.0.14, Repoman-3.0.2
    Signed-off-by: Sam James <[e-mail]>

 media-video/vlc/Manifest                 |   1 -
 media-video/vlc/vlc-3.0.11.1-r1.ebuild   | 492 ------------------------------
 media-video/vlc/vlc-3.0.11.1-r101.ebuild | 503 -------------------------------
 media-video/vlc/vlc-3.0.11.1.ebuild      | 491 ------------------------------
 media-video/vlc/vlc-3.0.12.1.ebuild      | 499 ------------------------------
 5 files changed, 1986 deletions(-)

[Comment 10 NATTkA bot 2021-01-27 23:36:55 UTC]

Unable to check for sanity:

> no match for package: media-video/vlc-3.0.12.1

[Comment 11 GLSAMaker/CVETool Bot 2021-01-29 00:04:57 UTC]

This issue was resolved and addressed in
 GLSA 202101-37 at https://security.gentoo.org/glsa/202101-37
by GLSA coordinator Aaron Bauman (b-man).