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Bug 792465 (CVE-2021-32635) - <sys-cluster/singularity-3.7.4: action commands against library URIs ignore configured remote endpoint
Summary: <sys-cluster/singularity-3.7.4: action commands against library URIs ignore c...
Alias: CVE-2021-32635
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal major (vote)
Assignee: Gentoo Security
Whiteboard: B1 [glsa+ cve]
Depends on:
Reported: 2021-05-27 10:45 UTC by Marek Szuba
Modified: 2021-07-22 04:55 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description Marek Szuba archtester gentoo-dev 2021-05-27 10:45:03 UTC
In singularity 3.7.2 and 3.7.3, action commands against library:// URIs erroneously always used the default remote endpoint ( An attacker may be able to push a malicious container to the default remote endpoint with a URI that is identical to the URI used by a victim with a non-default remote endpoint, thus executing the malicious container.
Comment 1 Sam James archtester Gentoo Infrastructure gentoo-dev Security 2021-05-28 00:28:25 UTC
x86 done
Comment 2 Sam James archtester Gentoo Infrastructure gentoo-dev Security 2021-05-28 00:28:30 UTC
amd64 done

all arches done
Comment 3 Larry the Git Cow gentoo-dev 2021-05-28 08:42:52 UTC
The bug has been referenced in the following commit(s):

commit 086e1d23d289498f83d7d321dc39ff1caaa79b9f
Author:     Marek Szuba <>
AuthorDate: 2021-05-28 08:41:32 +0000
Commit:     Marek Szuba <>
CommitDate: 2021-05-28 08:42:03 +0000

    sys-cluster/singularity: drop 3.7.3
    No versions vulnerable to CVE-2021-32635 left in the tree.
    Signed-off-by: Marek Szuba <>

 sys-cluster/singularity/Manifest                 |  1 -
 sys-cluster/singularity/singularity-3.7.3.ebuild | 73 ------------------------
 2 files changed, 74 deletions(-)
Comment 4 John Helmert III gentoo-dev Security 2021-05-30 16:07:10 UTC
Thank you for the report!
Comment 5 NATTkA bot gentoo-dev 2021-07-17 21:20:26 UTC
Unable to check for sanity:

> no match for package: =sys-cluster/singularity-3.7.4
Comment 6 John Helmert III gentoo-dev Security 2021-07-19 02:57:17 UTC
GLSA request filed.
Comment 7 GLSAMaker/CVETool Bot gentoo-dev 2021-07-22 04:55:25 UTC
This issue was resolved and addressed in
 GLSA 202107-50 at
by GLSA coordinator John Helmert III (ajak).