4.3

CVE-2015-4050: sensiolabs symfony Improper Access Control

CVSS: 4.3v2.0MediumModified
AliasesUBUNTU-CVE-2015-4050DEBIAN-CVE-2015-4050DSA-3276-1
Published 02-06-2015Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2015-4050 is a medium (CVSS 4.3) Improper Access Control vulnerability in sensiolabs symfony. EPSS estimates a 8.21% chance of exploitation in the next 30 days, higher than 94.8% of scored vulnerabilities.

Overall risk
19/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v2.0 (NVD)
EPSS score
8.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 02-06-2015
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

FragmentListener in the HttpKernel component in Symfony 2.3.19 through 2.3.28, 2.4.9 through 2.4.10, 2.5.4 through 2.5.11, and 2.6.0 through 2.6.7, when ESI or SSI support enabled, does not check if the _controller attribute is set, which allows remote attackers to bypass URL signing and security rules by including (1) no hash or (2) an invalid hash in a request to /_fragment.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

8.21%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

0.00 pp

From 8.21% on 20-09-2026

20-09-202620-10-2026
EPSS score
8.21%

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

Debian1 product
  • symfony< 2.7.0~beta2+dfsg-2 | < 2.3.21+dfsg-4+deb8u1
Sensiolabs1 product
  • symfonyEOL2.3.19 | 2.3.20 | 2.3.21 | 2.3.22 | 2.3.23 | 2.3.24 | 2.3.25 | 2.3.26 | 2.3.27 | 2.3.28 | 2.4.9 | 2.4.10 | 2.5.4 | 2.5.5 | 2.5.6 | 2.5.7 | 2.5.8 | 2.5.9 | 2.5.10 | 2.5.11 | 2.6.0 | 2.6.1 | 2.6.3 | 2.6.4 | 2.6.5 | 2.6.6 | 2.6.7
Ubuntu1 product
  • symfony< 2.7.10-0ubuntu2 | < 3.4.6+dfsg-1

3 vendors · 3 products

References

9 links