Medium
rust-aes-gcm — security advisory
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.
- Products
- rust-aes-gcm
- Affected versions
- 0.10.3-1, 0.10.3-2, 0.11.0-1
- Fixed versions
- Not specified
- CVEs
- CVE-2025-27498
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:25 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2025-27498
rust-aes-gcm
Fixed versions: Not specified
rust-aes-gcm
Fixed versions: Not specified
rust-aes-gcm
Fixed versions: Not specified
rust-aes-gcm
Fixed versions: Not specified
Complete source record
{
"id": "cdaecb19b4a4cf3f26bf733b755d64c3d3ee0e2dbebb9ce271108a0e14e7b661",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-27498",
"method": "structured",
"payload": {
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"title": "UBUNTU-CVE-2025-27498",
"summary": "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.",
"evidence": "osv:UBUNTU-CVE-2025-27498",
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"modified": "2026-10-17T12:56:48.991299855Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2025-27498",
"https://www.cve.org/CVERecord?id=CVE-2025-27498",
"https://github.com/RustCrypto/AEADs/commit/d1d749ba57e38e65b0e037cd744d0b17f7254037",
"https://github.com/RustCrypto/AEADs/security/advisories/GHSA-r38m-44fw-h886"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
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"source_id": "core-osv",
"document_id": 356367,
"published_at": "2025-03-03T17:15:00+00:00"
}