CVE-2023-26483

2023-03-0900:14:19

redhat.com

access.redhat.com

cve-2023-26483

gosaml2 package

memory exhaustion

deflate-compressed request

mitigation

limitation

memory availability.

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

0.001 Low

EPSS

Percentile

44.8%

JSON

A flaw was found in the gosaml2 package library. This issue may allow attackers to craft a deflate-compressed request, which will consume significantly more memory during processing than the size of the original request. This may eventually lead to memory exhaustion and the process being killed.

Mitigation

The maximum compression ratio achievable with deflate is 1032:1. By limiting the size of bodies passed to gosaml2, limiting the rate and concurrency of calls, and ensuring that lots of memory is available to the process, it may be possible to help Go's garbage collector "keep up".