Ecosyste.ms: Advisories
An open API service providing security vulnerability metadata for many open source software ecosystems.
Security Advisories: GSA_kwCzR0hTQS02Z2MzLWNycDctMjV3Nc4AAx6h
gosaml2 vulnerable to Denial Of Service Via Deflate Decompression Bomb
Impact
SAML Service Providers using this library for SAML authentication support are likely susceptible to Denial of Service attacks. A bug in this library enables 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, so 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".
Implementors are encouraged not to rely on this.
Patches
This issue is addressed in v0.9.0
Permalink: https://github.com/advisories/GHSA-6gc3-crp7-25w5JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS02Z2MzLWNycDctMjV3Nc4AAx6h
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 1 year ago
Updated: 11 months ago
CVSS Score: 5.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Identifiers: GHSA-6gc3-crp7-25w5, CVE-2023-26483
References:
- https://github.com/russellhaering/gosaml2/security/advisories/GHSA-6gc3-crp7-25w5
- https://github.com/russellhaering/gosaml2/commit/f9d66040241093e8702649baff50cc70d2c683c0
- https://github.com/russellhaering/gosaml2/releases/tag/v0.9.0
- https://pkg.go.dev/vuln/GO-2023-1602
- https://nvd.nist.gov/vuln/detail/CVE-2023-26483
- https://github.com/advisories/GHSA-6gc3-crp7-25w5
Blast Radius: 11.6
Affected Packages
go:github.com/russellhaering/gosaml2
Dependent packages: 65Dependent repositories: 155
Downloads:
Affected Version Ranges: < 0.9.0
Fixed in: 0.9.0
All affected versions: 0.1.0, 0.2.0, 0.3.0, 0.3.1, 0.4.0, 0.5.0, 0.6.0, 0.7.0, 0.8.0, 0.8.1
All unaffected versions: 0.9.0, 0.9.1