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CVE-2023-42811

18
FAUCET Score

CVE-2023-42811 is a medium-severity vulnerability affecting the aes-gcm Rust crate versions 0.10.0 through 0.10.2, and products utilizing these versions such as Fedora. The vulnerability allows the decrypted plaintext to be exposed even if GCM tag verification fails, potentially enabling Chosen Ciphertext Attacks (CCAs) and full plaintext recovery if the program accesses the buffer after decryption failure. With a CVSS score of 5.5 (Medium), it requires local access and low privileges, but can lead to high confidentiality impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.10.0, < 0.10.3CPE matchmatch criteria
cpe:2.3:a:aes-gcm_project:aes-gcm:*:*:*:*:*:rust:*:*
37CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
38CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
39CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
0.5
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 72nd percentile among its peer group of 15,938 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

rustpatch availablevia ghsa
Product: aes-gcmFixed in: 0.10.3
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

rustGHSA-423w-p2w9-r7vqmedium

AEADs/aes-gcm: Plaintext exposed in decrypt_in_place_detached even on tag verification failure

Sep 22, 2023

References

docs.rs / aes-gcm/latest/src/aes_gcm/lib.rs.html
Product
github.com / RustCrypto/AEADs/security/advisories/GHSA-423w-p2w9-r7vq
ExploitVendor Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/ROBB6TBDAGEQ2WIINR34F3DPSN3FND6K
Mailing List
lists.fedoraproject.org / archives/list/[email protected]/message/RYQCICN6BVC6I75O3F6W4VK4J3MOYDJU
Mailing List
lists.fedoraproject.org / archives/list/[email protected]/message/U67ZSMNX5V3WTBYPUYF45PSFG4SF5SGF
Mailing List