Bug 2252905 (CVE-2023-49290)

Summary:	CVE-2023-49290 jwx: Malicious parameters in JWE can cause denial of service
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	amctagga, caswilli, dhalasz, jburrell, jwendell, kaycoth, kshier, luizcosta, mkleinhe, muagarwa, nweather, odf-bz-bot, oezr, rcernich, stcannon, sthirugn, twalsh, vkrizan, vmugicag, yguenane, ypadia
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	jwx 2.0.18, jwx 1.2.27	Doc Type:	---
Doc Text:	A flaw was found in JWX. This issue occurs when passing crafted input to the JWE key management algorithm, which may result in a denial of service by using an excessive amount of CPU resources.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2252906, 2252907
Bug Blocks:	2252908

Description Pedro Sampaio 2023-12-05 07:42:41 UTC

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.

References:

https://github.com/lestrrat-go/jwx/commit/64f2a229b8e18605f47361d292b526bdc4aee01c
https://github.com/lestrrat-go/jwx/security/advisories/GHSA-7f9x-gw85-8grf

Comment 1 Pedro Sampaio 2023-12-05 07:45:55 UTC

Created golang-github-deepmap-oapi-codegen tracking bugs for this issue:

Affects: fedora-all [bug 2252906]


Created golang-github-lestrrat-jwx tracking bugs for this issue:

Affects: fedora-all [bug 2252907]