Bug 905336 (CVE-2023-26054)

Summary:	<app-containers/docker-24.0.4: vulnerability in bundled buildkit
Product:	Gentoo Security	Reporter:	John Helmert III <ajak>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	minor	CC:	ajak, gyakovlev, williamh
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://github.com/moby/buildkit/security/advisories/GHSA-gc89-7gcr-jxqc
Whiteboard:	B4 [glsa+]
Package list:		Runtime testing required:	---

Description John Helmert III archtester

2023-04-29 21:18:59 UTC

CVE-2023-26054:

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. In affected versions when the user sends a build request that contains a Git URL that contains credentials and the build creates a provenance attestation describing that build, these credentials could be visible from the provenance attestation. Git URL can be passed in two ways: 1) Invoking build directly from a URL with credentials. 2) If the client sends additional version control system (VCS) info hint parameters on builds from a local source. Usually, that would mean reading the origin URL from `.git/config` file. When a build is performed under specific conditions where credentials were passed to BuildKit they may be visible to everyone who has access to provenance attestation. Provenance attestations and VCS info hints were added in version v0.11.0. Previous versions are not vulnerable. In v0.10, when building directly from Git URL, the same URL could be visible in `BuildInfo` structure that is a predecessor of Provenance attestations. Previous versions are not vulnerable. This bug has been fixed in v0.11.4. Users are advised to upgrade. Users unable to upgrade may disable VCS info hints by setting `BUILDX_GIT_INFO=0`. `buildctl` does not set VCS hints based on `.git` directory, and values would need to be passed manually with `--opt`.

Fixed in buildkit-0.11.4. moby (docker) bumped its bundled buildkit in 24.0 betas/RCs:
https://github.com/moby/moby/commit/324290a5eb1374d6a867b4a392cf54431cf2a3ee

Comment 1 John Helmert III archtester

2024-09-22 02:55:28 UTC

> Fixed in buildkit-0.11.4. moby (docker) bumped its bundled buildkit in 24.0 betas/RCs:

And thus I suppose 24.0.4 is the first fixed version for us.

Comment 2 Larry the Git Cow gentoo-dev

2024-09-28 07:33:13 UTC

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

https://gitweb.gentoo.org/data/glsa.git/commit/?id=72515324253c8d95723f4e5308eb0fe41ebed5cd

commit 72515324253c8d95723f4e5308eb0fe41ebed5cd
Author:     GLSAMaker <glsamaker@gentoo.org>
AuthorDate: 2024-09-28 07:32:55 +0000
Commit:     Hans de Graaff <graaff@gentoo.org>
CommitDate: 2024-09-28 07:33:05 +0000

    [ GLSA 202409-29 ] Docker: Multiple Vulnerabilities
    
    Bug: https://bugs.gentoo.org/816273
    Bug: https://bugs.gentoo.org/869407
    Bug: https://bugs.gentoo.org/877653
    Bug: https://bugs.gentoo.org/886509
    Bug: https://bugs.gentoo.org/903804
    Bug: https://bugs.gentoo.org/905336
    Bug: https://bugs.gentoo.org/925022
    Signed-off-by: GLSAMaker <glsamaker@gentoo.org>
    Signed-off-by: Hans de Graaff <graaff@gentoo.org>

 glsa-202409-29.xml | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)