x11vnc: CVE-2020-29074

Debian Bug report logs - #975875
x11vnc: CVE-2020-29074

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: x11vnc: CVE-2020-29074

Date: Thu, 26 Nov 2020 05:59:50 +0100

Source: x11vnc
Version: 0.9.13-6
Severity: grave
Tags: security upstream fixed-upstream
Justification: user security hole
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>
Control: found -1 0.9.16-4

Hi,

The following vulnerability was published for x11vnc.

CVE-2020-29074[0]:
| scan.c in x11vnc 0.9.16 uses IPC_CREAT|0777 in shmget calls, which
| allows access by actors other than the current user.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2020-29074
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29074
[1] https://github.com/LibVNC/x11vnc/commit/69eeb9f7baa14ca03b16c9de821f9876def7a36a

Given the relative minor change I have already picked up the commit
for a buster-security update as well.

Regards,
Salvatore

Message #12 received at 975875@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: 975875@bugs.debian.org

Cc: Antoni Villalonga <antoni@friki.cat>, Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Subject: Re: Bug#975875: x11vnc: CVE-2020-29074

Date: Thu, 26 Nov 2020 06:47:37 +0100

[Message part 1 (text/plain, inline)]

Control: tags -1 + patch

Hi

On Thu, Nov 26, 2020 at 05:59:50AM +0100, Salvatore Bonaccorso wrote:
> Source: x11vnc
> Version: 0.9.13-6
> Severity: grave
> Tags: security upstream fixed-upstream
> Justification: user security hole
> X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>
> Control: found -1 0.9.16-4
> 
> Hi,
> 
> The following vulnerability was published for x11vnc.
> 
> CVE-2020-29074[0]:
> | scan.c in x11vnc 0.9.16 uses IPC_CREAT|0777 in shmget calls, which
> | allows access by actors other than the current user.
> 
> 
> If you fix the vulnerability please also make sure to include the
> CVE (Common Vulnerabilities & Exposures) id in your changelog entry.
> 
> For further information see:
> 
> [0] https://security-tracker.debian.org/tracker/CVE-2020-29074
>     https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29074
> [1] https://github.com/LibVNC/x11vnc/commit/69eeb9f7baa14ca03b16c9de821f9876def7a36a
> 
> Given the relative minor change I have already picked up the commit
> for a buster-security update as well.

For unstable I openend

https://salsa.debian.org/debian-remote-team/x11vnc/-/merge_requests/2

Regards,
Salvatore

[0005-scan-limit-access-to-shared-memory-segments-to-curre.patch (text/x-diff, attachment)]

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