7.5

CVE-2023-29197: fedoraproject fedora Interpretation Conflict

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2023-29197USN-6671-1DEBIAN-CVE-2023-29197
Published 17-04-2023Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2023-29197 is a high (CVSS 7.5) Interpretation Conflict vulnerability in fedoraproject fedora. EPSS estimates a 1.22% chance of exploitation in the next 30 days, higher than 68.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
MGASA-2023-0241USN-6670-1

Timeline

  1. 17-04-2023
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Affected versions are subject to improper header parsing. An attacker could sneak in a newline (\n) into both the header names and values. While the specification states that \r\n\r\n is used to terminate the header list, many servers in the wild will also accept \n\n. This is a follow-up to CVE-2022-24775 where the fix was incomplete. The issue has been patched in versions 1.9.1 and 2.4.5. There are no known workarounds for this vulnerability. Users are advised to upgrade.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

1.22%

Chance of exploitation in the next 30 days

Percentile

68%

Versus all other CVEs

30-day change

0.00 pp

From 1.22% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
  • php-guzzlehttp-psr7< 2.4.5-1 | < 1.4.2-0.1+deb10u2
  • php-nyholm-psr7< 1.5.1-2
Ubuntu2 products
  • php-guzzlehttp-psr7All versions (No fix recorded) | < 1.4.2-0.1+deb10u2build0.20.04.1 | < 1.8.3-1ubuntu0.1~esm1
  • php-nyholm-psr7All versions (No fix recorded) | < 1.5.0-1ubuntu0.1~esm1
Wordpress2 products
  • amazon-s3-and-cloudfront< 3.2.2
  • wp-ses< 1.6.4
Fedoraproject1 product
Guzzle1 product
  • psr7< 1.9.1 | ≥ 2.0.0, < 2.4.5
Guzzlephp1 product
  • psr-7< 1.9.1 | ≥ 2.0.0, < 2.4.5

6 vendors · 9 products

References

16 links
Show all 16 references