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CVE-2020-8945

27
FAUCET Score

CVE-2020-8945 describes a use-after-free vulnerability in the proglottis Go wrapper for the GPGME library, affecting products like fedoraproject, gpgme_project, and redhat. This flaw, with a CVSS score of 7.5 (HIGH), can lead to a crash or potential code execution during GPG signature verification, particularly when used by container image pulls in Docker or CRI-O. While the attack vector is network-based, it requires user interaction and has high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.1.1CPE matchmatch criteria
cpe:2.3:a:gpgme_project:gpgme:*:*:*:*:*:go:*:*
3.11CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:*
4.1CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform:4.1:*:*:*:*:*:*:*
4.2CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform:4.2:*:*:*:*:*:*:*
4.3CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform:4.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.07%
Probability of exploitation in next 30 days
EPSS Percentile
91.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0507 is in the 59th percentile among its peer group of 1,570 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.2 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.6 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (37)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/proglottis/gpgmeFixed in: 0.1.1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 ExtrasFixed in: buildah-0:1.11.6-8.el7_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 ExtrasFixed in: docker-2:1.13.1-161.git64e9980.el7_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 ExtrasFixed in: podman-0:1.6.4-18.el7_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: atomic-openshift-0:3.11.248-1.git.0.92ee8ac.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.1Fixed in: skopeo-1:0.1.32-6.git1715c90.el8_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.2Fixed in: openshift4/ose-docker-builder:v4.2.28-202004061218
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.2Fixed in: openshift4/ose-openshift-controller-manager-rhel7:v4.2.34-202005252115
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.2Fixed in: skopeo-1:0.1.32-7.git1715c90.rhaos4.2.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.2Fixed in: openshift-clients-0:4.2.32-202005020632.git.1.1b0fab9.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.3Fixed in: cri-o-0:1.16.4-1.dev.rhaos4.3.git9238eee.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.3Fixed in: openshift4/ose-cli:v4.3.7-202003161611
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.3Fixed in: openshift4/ose-cli-artifacts:v4.3.7-202003161611
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.3Fixed in: openshift4/ose-docker-builder:v4.3.7-202003161611
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.3Fixed in: openshift-clients-0:4.3.7-202003130552.git.0.6027a27.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.3Fixed in: openshift4/ose-openshift-controller-manager-rhel7:v4.3.9-202003230345
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.3Fixed in: skopeo-1:0.1.40-4.rhaos.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.3Fixed in: podman-0:1.6.4-10.rhaos4.3.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.4Fixed in: cri-o-0:1.17.4-8.dev.rhaos4.4.git5f5c5e4.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.4Fixed in: openshift4/ose-cluster-policy-controller-rhel7:v4.4.0-202004261927
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.4Fixed in: machine-config-daemon-0:4.4.0-202007092124.p0.git.2349.08d34d1.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.5Fixed in: machine-config-daemon-0:4.5.0-202007012112.p0.git.2527.d12c3da.el8
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 ExtrasFixed in: skopeo-1:0.1.40-7.el7_8
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:2.0/skopeo
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:2.0/podman
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:rhel8/podman
redhatno patchvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-machine-config-operator
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:rhel8/skopeo
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:1.0/buildah
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift-enterprise-node-container
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:2.0/buildah
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:rhel8/buildah
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: cri-o
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: podman

Vendor Advisories (2)

goGHSA-m6wg-2mwg-4rfqhigh

GPGME Go wrapper contains Use After Free

May 18, 2021
redhatCVE-2020-8945Moderate

proglottis/gpgme: Use-after-free in GPGME bindings during container image pull

Jan 16, 2020

References

access.redhat.com / errata/RHSA-2020:0679
Third Party Advisory
access.redhat.com / errata/RHSA-2020:0689
Third Party Advisory
access.redhat.com / errata/RHSA-2020:0697
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
github.com / containers/image/commit/4c7a23f82ef09127b0ff28366d1cf31316dd6cc1
PatchThird Party Advisory
github.com / proglottis/gpgme/compare/v0.1.0...v0.1.1
PatchThird Party Advisory
github.com / proglottis/gpgme/pull/23
ExploitPatchThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/3SOCLOPTSYABTE4CLTSPDIFE6ZZZR4LX
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/H6P6SSNKN4H6GSEVROHBDXA64PX7EOED
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/KDBT77KV3U7BESJX3P4S4MPVDGRTAQA2
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/WXV7NZELYWRRCXATXU3FYD3G3WJT3WYM