CVE-2023-26483
Gosaml2 Deflate Compression Denial of Service (DoS)
Description
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.
INFO
Published Date :
March 3, 2023, 11:15 p.m.
Last Modified :
Nov. 7, 2023, 4:09 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-26483.
| URL | Resource |
|---|---|
| https://github.com/russellhaering/gosaml2/commit/f9d66040241093e8702649baff50cc70d2c683c0 | Patch |
| https://github.com/russellhaering/gosaml2/releases/tag/v0.9.0 | Release Notes |
| https://github.com/russellhaering/gosaml2/security/advisories/GHSA-6gc3-crp7-25w5 | Vendor Advisory |
| https://pkg.go.dev/vuln/GO-2023-1602 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2023-26483 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-26483 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Changed Description 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. 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. -
Initial Analysis by [email protected]
Mar. 13, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Changed Reference Type https://github.com/russellhaering/gosaml2/commit/f9d66040241093e8702649baff50cc70d2c683c0 No Types Assigned https://github.com/russellhaering/gosaml2/commit/f9d66040241093e8702649baff50cc70d2c683c0 Patch Changed Reference Type https://github.com/russellhaering/gosaml2/releases/tag/v0.9.0 No Types Assigned https://github.com/russellhaering/gosaml2/releases/tag/v0.9.0 Release Notes Changed Reference Type https://github.com/russellhaering/gosaml2/security/advisories/GHSA-6gc3-crp7-25w5 No Types Assigned https://github.com/russellhaering/gosaml2/security/advisories/GHSA-6gc3-crp7-25w5 Vendor Advisory Changed Reference Type https://pkg.go.dev/vuln/GO-2023-1602 No Types Assigned https://pkg.go.dev/vuln/GO-2023-1602 Third Party Advisory Added CWE NIST NVD-CWE-Other Added CPE Configuration OR *cpe:2.3:a:gosaml2_project:gosaml2:*:*:*:*:*:*:*:* versions up to (excluding) 0.9.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-26483 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-26483
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.12 }} 0.01%
score
0.47458
percentile