8.6

CVE-2023-37464: cisco cjose

CVSS: 8.6v3.1HighModified
AliasesMGASA-2023-0350SUSE-SU-2023:3030-1SUSE-SU-2023:3230-1
Published 14-07-2023Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2023-37464 is a high (CVSS 8.6) vulnerability in cisco cjose. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 52.6% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
45/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v3.1 (CVE.org)
EPSS score
0.71%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 14-07-2023
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

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).

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.71%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

0.00 pp

From 0.71% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.71%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Cjose

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Suse24 products
  • cjose&distro=SUSE Enterprise Storage 7< 0.6.1-150100.4.6.1
  • cjose&distro=SUSE Enterprise Storage 7.1< 0.6.1-150100.4.6.1
  • cjose&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS< 0.6.1-150100.4.6.1
  • cjose&distro=SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS< 0.6.1-150100.4.6.1
  • cjose&distro=SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS< 0.6.1-150100.4.6.1
Redhat7 products
  • cjose< 0:0.6.1-3.module+el8.6.0+19463+7d2e1f9c | < 0:0.6.1-3.module+el8.4.0+19462+14bde120 | < 0:0.6.1-3.module+el8.2.0+19461+3a40b6ee | < 0:0.6.1-13.el9_2 | < 0:0.6.1-13.el9_0 | < 0:0.6.1-3.module+el8.8.0+19464+578f4546 | < 0:0.6.1-3.module+el8.1.0+19504+b2d26fa1
  • cjose-debuginfo< 0:0.6.1-3.module+el8.6.0+19463+7d2e1f9c | < 0:0.6.1-3.module+el8.4.0+19462+14bde120 | < 0:0.6.1-3.module+el8.2.0+19461+3a40b6ee | < 0:0.6.1-13.el9_2 | < 0:0.6.1-13.el9_0 | < 0:0.6.1-3.module+el8.8.0+19464+578f4546 | < 0:0.6.1-3.module+el8.1.0+19504+b2d26fa1
  • cjose-debugsource< 0:0.6.1-3.module+el8.6.0+19463+7d2e1f9c | < 0:0.6.1-3.module+el8.4.0+19462+14bde120 | < 0:0.6.1-3.module+el8.2.0+19461+3a40b6ee | < 0:0.6.1-13.el9_2 | < 0:0.6.1-13.el9_0 | < 0:0.6.1-3.module+el8.8.0+19464+578f4546 | < 0:0.6.1-3.module+el8.1.0+19504+b2d26fa1
  • cjose-devel< 0:0.6.1-3.module+el8.6.0+19463+7d2e1f9c | < 0:0.6.1-3.module+el8.4.0+19462+14bde120 | < 0:0.6.1-3.module+el8.2.0+19461+3a40b6ee | < 0:0.6.1-3.module+el8.8.0+19464+578f4546 | < 0:0.6.1-3.module+el8.1.0+19504+b2d26fa1
  • mod_auth_openidc< 0:2.3.7-11.module+el8.6.0+14082+b6f23e95 | < 0:2.3.7-8.module+el8.4.0+9707+f2438af7 | < 0:2.3.7-4.module+el8.2.0+6919+ac02cfd2.3 | < 0:2.4.9.4-1.module+el8.7.0+14797+4085fcb6 | < 0:2.3.7-4.module+el8.1.0+19504+b2d26fa1.3
Mageia2 products
  • cjose< 0.6.1-1.1.mga8
  • cjose< 0.6.1-3.1.mga9
Opensuse2 products
  • cjose&distro=openSUSE Leap 15.4< 0.6.1-150100.4.6.1
  • cjose&distro=openSUSE Leap 15.5< 0.6.1-150100.4.6.1
Cisco1 product
Debian1 product
  • cjose< 0.6.2.2-1 | < 0.6.1+dfsg1-1+deb11u1 | < 0.6.2.1-1+deb12u1 | < 0.6.1+dfsg1-1+deb10u1
Openidc1 product
Ubuntu1 product
  • cjose< 0.6.0+dfsg1-1ubuntu0.1~esm1 | < 0.6.1+dfsg1-1ubuntu0.1 | < 0.6.1+dfsg1-3ubuntu1.1 | All versions (No fix recorded)

8 vendors · 39 products

References

37 links
Show all 37 references