CVE-2023-26483

2023-03-0323:15:12

CWE-409

[email protected]

web.nvd.nist.gov

cve-2023-26483

gosaml2

saml 2.0

pure go

denial of service

dos

vulnerability

bug

deflate

memory exhaustion

nvd

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

5.1 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

44.9%

JSON

gosaml2 is a Pure Go implementation of SAML 2.0. 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. 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. This issue is fixed in version 0.9.0.

Affected configurations

Vulners

NVD

Node

russellhaeringgosaml2Range<0.9.0

CPENameOperatorVersion
gosaml2_project:gosaml2gosaml2 project gosaml2lt0.9.0

CPE	Name	Operator	Version
gosaml2_project:gosaml2	gosaml2 project gosaml2	lt	0.9.0

CNA Affected

[
  {
    "vendor": "russellhaering",
    "product": "gosaml2",
    "versions": [
      {
        "version": "< 0.9.0",
        "status": "affected"
      }
    ]
  }
]