Crypt::NaCl::Sodium versions through 2.002 for Perl has potential integer overflows.
bin2hex, encrypt, aes256gcm_encrypt_afternm and seal functions do not check that output size will be less than SIZE_MAX, which could lead to integer wraparound causing an undersized output buffer.
Encountering this issue is unlikely as the message length would need to be very large.
For bin2hex() the bin_len would have to be > SIZE_MAX / 2 For encrypt() the msg_len would need to be > SIZE_MAX - 16U For aes256gcm_encrypt_afternm() the msg_len would need to be > SIZE_MAX - 16U For seal() the enc_len would need to be > SIZE_MAX - 64U
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Timlegge Crypt\
cpe:2.3:a:timlegge:crypt\:\:nacl\:\:sodium:*:*:*:*:*:perl:*:*
|
— |
2.003
|
References 7
https://github.com/cpan-authors/crypt-nacl-sodium/pull/24.patch
9b29abf9-4ab0-4765-b253-1875cd9b441e
https://metacpan.org/release/TIMLEGGE/Crypt-NaCl-Sodium-2.002/source/Sodium.xs#…
9b29abf9-4ab0-4765-b253-1875cd9b441e
https://metacpan.org/release/TIMLEGGE/Crypt-NaCl-Sodium-2.002/source/Sodium.xs#…
9b29abf9-4ab0-4765-b253-1875cd9b441e
https://metacpan.org/release/TIMLEGGE/Crypt-NaCl-Sodium-2.002/source/Sodium.xs#…
9b29abf9-4ab0-4765-b253-1875cd9b441e
https://metacpan.org/release/TIMLEGGE/Crypt-NaCl-Sodium-2.002/source/Sodium.xs#…
9b29abf9-4ab0-4765-b253-1875cd9b441e
https://metacpan.org/release/TIMLEGGE/Crypt-NaCl-Sodium-2.003/source/Changes
9b29abf9-4ab0-4765-b253-1875cd9b441e
http://www.openwall.com/lists/oss-security/2026/03/08/1
af854a3a-2127-422b-91ae-364da2661108