8.1

CVE-2019-18887: fedoraproject fedora Observable Discrepancy

CVSS: 8.1v3.1HighModified
AliasesUBUNTU-CVE-2019-18887DEBIAN-CVE-2019-18887
Published 21-11-2019Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2019-18887 is a high (CVSS 8.1) Observable Discrepancy vulnerability in fedoraproject fedora. EPSS estimates a 1.34% chance of exploitation in the next 30 days, higher than 70.8% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
1.34%
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
DLA-1999-1DSA-4573-1

Timeline

  1. 21-11-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in Symfony 2.8.0 through 2.8.50, 3.4.0 through 3.4.34, 4.2.0 through 4.2.11, and 4.3.0 through 4.3.7. The UriSigner was subject to timing attacks. This is related to symfony/http-kernel.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.34%

Chance of exploitation in the next 30 days

Percentile

71%

Versus all other CVEs

30-day change

0.00 pp

From 1.34% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.34%

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< 4.3.8+dfsg-1
Fedoraproject1 product
Sensiolabs1 product
  • symfony≥ 2.8.0, ≤ 2.8.50 | ≥ 3.4.0, ≤ 3.4.34 | ≥ 4.2.0, ≤ 4.2.11 | ≥ 4.3.0, ≤ 4.3.7
Ubuntu1 product
  • symfonyAll versions (No fix recorded)

4 vendors · 4 products

References

10 links