CVE-2025-27498

AEADs/ascon-aead: Plaintext exposed in decrypt_in_place_detached even on tag verification failure

Description

aes-gcm is a pure Rust implementation of the AES-GCM. In decrypt_in_place_detached, the decrypted ciphertext (which is the correct ciphertext) is exposed even if the tag is incorrect. This is because in decrypt_inplace in asconcore.rs, tag verification causes an error to be returned with the plaintext contents still in buffer. The vulnerability is fixed in 0.4.3.

Category

5.6
CVSS
Severity: Medium
CVSS 4.0 •
EPSS 0.01%
Affected: RustCrypto AEADs
Published at:
Updated at:

References

Link Tags
https://github.com/RustCrypto/AEADs/security/advisories/GHSA-r38m-44fw-h886
https://github.com/RustCrypto/AEADs/commit/d1d749ba57e38e65b0e037cd744d0b17f7254037

Frequently Asked Questions

What is the severity of CVE-2025-27498?
CVE-2025-27498 has been scored as a medium severity vulnerability.
How to fix CVE-2025-27498?
To fix CVE-2025-27498, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-27498 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-27498 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-27498?
CVE-2025-27498 affects RustCrypto AEADs.
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