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Bug 891335 (CVE-2023-22809)

Summary: <app-admin/sudo-1.9.12_p2: env var mishandling leads to arbitrary file editing
Product: Gentoo Security Reporter: John Helmert III <ajak>
Component: VulnerabilitiesAssignee: Gentoo Security <security>
Status: RESOLVED FIXED    
Severity: major CC: base-system
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
URL: https://www.synacktiv.com/sites/default/files/2023-01/sudo-CVE-2023-22809.pdf
Whiteboard: B1 [glsa+]
Package list:
Runtime testing required: ---
Bug Depends on: 891405    
Bug Blocks:    

Description John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2023-01-18 19:32:59 UTC 
CVE-2023-22809:

In Sudo before 1.9.12p2, the sudoedit (aka -e) feature mishandles extra arguments passed in the user-provided environment variables (SUDO_EDITOR, VISUAL, and EDITOR), allowing a local attacker to append arbitrary entries to the list of files to process. This can lead to privilege escalation. Affected versions are 1.8.0 through 1.9.12.p1. The problem exists because a user-specified editor may contain a "--" argument that defeats a protection mechanism, e.g., an EDITOR='vim -- /path/to/extra/file' value.

Please bump to 1.9.12p2.
Comment 1 Larry the Git Cow gentoo-dev 2023-01-18 21:54:07 UTC 
The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=9221536c0eb35c149399339abe2edcca58c2b091

commit 9221536c0eb35c149399339abe2edcca58c2b091
Author:     Sam James <sam@gentoo.org>
AuthorDate: 2023-01-18 21:51:42 +0000
Commit:     Sam James <sam@gentoo.org>
CommitDate: 2023-01-18 21:51:42 +0000

    app-admin/sudo: add 1.9.12_p2
    
    Bug: https://bugs.gentoo.org/891335
    Signed-off-by: Sam James <sam@gentoo.org>

 app-admin/sudo/Manifest              |   2 +
 app-admin/sudo/sudo-1.9.12_p2.ebuild | 286 +++++++++++++++++++++++++++++++++++
 2 files changed, 288 insertions(+)
Comment 2 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2023-01-25 19:36:49 UTC 
GLSA request filed
Comment 3 Larry the Git Cow gentoo-dev 2023-05-03 09:54:31 UTC 
The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/data/glsa.git/commit/?id=81c8110bb9b2773a088b16cce1850f93198cb68f

commit 81c8110bb9b2773a088b16cce1850f93198cb68f
Author:     GLSAMaker <glsamaker@gentoo.org>
AuthorDate: 2023-05-03 09:53:34 +0000
Commit:     Sam James <sam@gentoo.org>
CommitDate: 2023-05-03 09:54:23 +0000

    [ GLSA 202305-12 ] sudo: Root Privilege Escalation
    
    Bug: https://bugs.gentoo.org/891335
    Signed-off-by: GLSAMaker <glsamaker@gentoo.org>
    Signed-off-by: Sam James <sam@gentoo.org>

 glsa-202305-12.xml | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)