Description (CNA)
CryptX versions before 0.088_001 for Perl have a stack buffer overflow in four AEAD decrypt_verify helpers. The gcm_decrypt_verify, ccm_decrypt_verify, chacha20poly1305_decrypt_verify and eax_decrypt_verify XS routines copied the caller-supplied authentication tag into a fixed 144-byte stack buffer (MAXBLOCKSIZE) without checking the supplied length. A longer tag overwrites the stack past the buffer. Version 0.088 added the clamp to gcm_decrypt_verify, and 0.088_001 added it to the other three. Any caller of an affected helper that forwards an attacker-controlled tag longer than the buffer can trigger the overflow.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| MIK / CryptX | affected 0 before 0.088_001 |
CWE
CWE-121
References
- https://github.com/DCIT/perl-CryptX/commit/57e69e541b0718ca8724c2f61514322a2d859bc1.patch
- https://github.com/DCIT/perl-CryptX/commit/7e56347d420aaf43b2ee1586f4a230492ccf1642.patch
- https://metacpan.org/release/MIK/CryptX-0.088_001
ADP enrichment
No English description supplied.
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No references supplied.