CVE-2023-49290 — MEDIUM (5.3)

Q: How severe is CVE-2023-49290?

CVE-2023-49290 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2023-49290?

Check the references section above for vendor advisories and patch information. Affected products include: Lestrrat-Go Jwx.

Vulnerability Description

lestrrat-go/jwx is a Go module implementing various JWx (JWA/JWE/JWK/JWS/JWT, otherwise known as JOSE) technologies. A p2c parameter set too high in JWE's algorithm PBES2-* could lead to a denial of service. The JWE key management algorithms based on PBKDF2 require a JOSE Header Parameter called p2c (PBES2 Count). This parameter dictates the number of PBKDF2 iterations needed to derive a CEK wrapping key. Its primary purpose is to intentionally slow down the key derivation function, making password brute-force and dictionary attacks more resource- intensive. Therefore, if an attacker sets the p2c parameter in JWE to a very large number, it can cause a lot of computational consumption, resulting in a denial of service. This vulnerability has been addressed in commit `64f2a229b` which has been included in release version 1.2.27 and 2.0.18. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

LOW

Affected Products

Vendor	Product	Versions
Lestrrat-Go	Jwx	< 1.2.27

Related Weaknesses (CWE)

CWE-400

References

https://github.com/lestrrat-go/jwx/commit/64f2a229b8e18605f47361d292b526bdc4aee0Patch
https://github.com/lestrrat-go/jwx/security/advisories/GHSA-7f9x-gw85-8grfExploitVendor Advisory
https://github.com/lestrrat-go/jwx/commit/64f2a229b8e18605f47361d292b526bdc4aee0Patch
https://github.com/lestrrat-go/jwx/security/advisories/GHSA-7f9x-gw85-8grfExploitVendor Advisory

FAQ

What is CVE-2023-49290?

CVE-2023-49290 is a vulnerability with a CVSS score of 5.3 (MEDIUM). lestrrat-go/jwx is a Go module implementing various JWx (JWA/JWE/JWK/JWS/JWT, otherwise known as JOSE) technologies. A p2c parameter set too high in JWE's algorithm PBES2-* could lead to a denial of s...

How severe is CVE-2023-49290?

CVE-2023-49290 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-49290?

Check the references section above for vendor advisories and patch information. Affected products include: Lestrrat-Go Jwx.