Incorrect Authentication Tag length usage in AES GCM decryption in OpenIDC/cjose
CVE-2023-37464 is fixed in 4 products on 1 platform, first by libcjose0 0.6.0+dfsg1-1ubuntu0.1~esm1, released July 14, 2023. It is not reported as exploited. Patch Radar priority: High.
OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption (JOSE). The AES GCM decryption routine incorrectly uses the Tag length from the actual Authentication Tag provided in the JWE. The spec says that a fixed length of 16 octets must be applied. Therefore this bug allows an attacker to provide a truncated Authentication Tag and to modify the JWE accordingly. Users should upgrade to a version >= 0.6.2.2. Users unable to upgrade should avoid using AES GCM encryption and replace it with another encryption algorithm (e.g. AES CBC).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| cjose · Debian 11.6 (bullseye) | 0.6.1+dfsg1-1+deb11u1 | DSA-5472-1 | Aug 8, 2023 |
| cjose · Debian 12.15 (bookworm) | 0.6.2.1-1+deb12u1 | DSA-5472-1 | Aug 8, 2023 |
| cjose · Debian 13.5 (trixie) | 0.6.2.2-1 | DEBIAN-CVE-2023-37464 | Jul 14, 2023 |
| cjose · Debian 14 | 0.6.2.2-1 | DEBIAN-CVE-2023-37464 | Jul 14, 2023 |
| cjose · RHEL 8 | 0:0.6.1-3.module+el8.8.0+19464+578f4546 | RHSA-2023:4418 | Aug 1, 2023 |
| cjose · RHEL 9 | 0:0.6.1-13.el9_2 | RHSA-2023:4411 | Aug 1, 2023 |
| cjose · almalinux 8 | 0.6.1-3.module_el8.8.0+3591+c9939da8 | ALSA-2023:4418 | Aug 1, 2023 |
| cjose · almalinux 9 | 0.6.1-13.el9_2.alma | ALSA-2023:4411 | Aug 1, 2023 |
| cjose · ol 8 | 0:0.6.1-3.module+el8.8.0+21137+b6cedbc2 | ELSA-2023-4418 | Aug 2, 2023 |
| cjose · ol 9 | 0:0.6.1-13.el9_2 | ELSA-2023-4411 | Aug 2, 2023 |
| cjose · rocky 8 | 0:0.6.1-3.module+el8.8.0+1406+4a7f5371 | RLSA-2023:4418 | Aug 8, 2023 |
| cjose-devel · RHEL 8 | 0:0.6.1-3.module+el8.8.0+19464+578f4546 | RHSA-2023:4418 | Aug 1, 2023 |
| cjose-devel · almalinux 8 | 0.6.1-3.module_el8.8.0+3591+c9939da8 | ALSA-2023:4418 | Aug 1, 2023 |
| cjose-devel · ol 8 | 0:0.6.1-3.module+el8.8.0+21137+b6cedbc2 | ELSA-2023-4418 | Aug 2, 2023 |
| libcjose0 · Ubuntu 18.04.6 LTS (bionic) | 0.6.0+dfsg1-1ubuntu0.1~esm1 | libcjose0 0.6.0+dfsg1-1ubuntu0.1~esm1 | Jul 14, 2023 |
| libcjose0 · Ubuntu 20.04 LTS (focal) | 0.6.1+dfsg1-1ubuntu0.1 | libcjose0 0.6.1+dfsg1-1ubuntu0.1 | Jul 14, 2023 |
| libcjose0 · Ubuntu 22.04.1 LTS (jammy) | 0.6.1+dfsg1-3ubuntu1.1 | libcjose0 0.6.1+dfsg1-3ubuntu1.1 | Jul 14, 2023 |
| mod_auth_openidc · RHEL 8 | 0:2.4.9.4-1.module+el8.7.0+14797+4085fcb6 | RHSA-2023:4418 | Aug 1, 2023 |
| mod_auth_openidc · almalinux 8 | 2.4.9.4-1.module_el8.7.0+3305+9a59f0c3 | ALSA-2023:4418 | Aug 1, 2023 |
| mod_auth_openidc · ol 8 | 0:2.4.9.4-1.module+el8.7.0+20769+fca4d9d0 | ELSA-2023-4418 | Aug 2, 2023 |
| mod_auth_openidc · rocky 8 | 0:2.4.9.4-1.module+el8.7.0+1061+55d14382 | RLSA-2023:4418 | Aug 8, 2023 |
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