7.5

CVE-2013-4547: f5 nginx Improper Encoding or Escaping of Output

CVSS: 7.5v2.0HighModified
AliasesMGASA-2013-0349DEBIAN-CVE-2013-4547DSA-2802-1
Published 23-11-2013Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2013-4547 is a high (CVSS 7.5) Improper Encoding or Escaping of Output vulnerability in f5 nginx. EPSS estimates a 67.72% chance of exploitation in the next 30 days, higher than 99.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
54/100
0100
High · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v2.0 (NVD)
EPSS score
67.72%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1exploit-database

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2024:10044-1

Timeline

  1. 23-11-2013
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

nginx 0.8.41 through 1.4.3 and 1.5.x before 1.5.7 allows remote attackers to bypass intended restrictions via an unescaped space character in a URI.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

67.72%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

0.00 pp

From 67.72% on 18-09-2026

18-09-202618-10-2026
EPSS score
67.72%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • exploit-databaseremotemultipleVerified

    Nginx 1.1.17 - URI Processing SecURIty Bypass

    Maturity: weaponized

Weaknesses

CWE · root cause

Affected systems

Suse3 products
Mageia2 products
  • nginx< 1.0.15-2.1.mga2
  • nginx< 1.2.9-1.2.mga3
Debian1 product
  • nginx< 1.4.4-1 | < 1.2.1-2.2+wheezy2
F51 product
  • nginx≥ 0.8.41, < 1.4.4 | ≥ 1.5.0, ≤ 1.5.6
Opensuse1 product

5 vendors · 8 products

References

12 links
Show all 12 references