7.5

CVE-2020-25613: fedoraproject fedora

Modified
AliasesALPINE-CVE-2020-25613MGASA-2020-0423SUSE-SU-2021:0933-1
Published 06-10-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-25613 is a high (CVSS 7.5) vulnerability in fedoraproject fedora. EPSS estimates a 3.82% chance of exploitation in the next 30 days, higher than 90% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 4% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
3.82%
0%100%
Low · -0.03 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 16 · Related 3
DLA-3408-1MGASA-2020-0440OPENSUSE-SU-2024:11310-1RHSA-2021:2104RHSA-2021:2229RHSA-2021:2230

Timeline

  1. 06-10-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

3.82%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

Decrease -0.03 pp

From 3.85% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse15 products
  • ruby2.5&distro=SUSE Enterprise Storage 6< 2.5.8-4.14.1
  • ruby2.5&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS< 2.5.8-4.14.1
  • ruby2.5&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS< 2.5.8-4.14.1
  • ruby2.5&distro=SUSE Linux Enterprise High Performance Computing 15-ESPOS< 2.5.8-4.14.1
  • ruby2.5&distro=SUSE Linux Enterprise High Performance Computing 15-LTSS< 2.5.8-4.14.1
Ubuntu3 products
  • ruby2.3< 2.3.1-2~ubuntu16.04.15
  • ruby2.5< 2.5.1-1ubuntu1.8
  • ruby2.7< 2.7.0-5ubuntu1.3
Debian2 products
  • jruby< 1.7.26-1+deb9u3 | < 9.3.9.0+ds-1
  • ruby2.3< 2.3.3-1+deb9u9
Ruby-lang2 products
  • ruby≤ 2.5.8 | ≥ 2.6.0, ≤ 2.6.6 | ≥ 2.7.0, ≤ 2.7.1
  • webrick≤ 1.6.0
Alpine1 product
  • ruby≥ 2.6.0, < 2.5.8-r1 | ≥ 2.6.0, < 2.6.6-r3 | ≥ 2.6.0, < 2.7.2-r0
Fedoraproject1 product
Mageia1 product
  • ruby< 2.5.8-22.mga7
Opensuse1 product
  • ruby2.5&distro=openSUSE Leap 15.2< 2.5.8-lp152.2.3.1
RubyGems1 product
  • webrick≥ 1.6.0, < 1.6.1 | ≥ 1.5.0, < 1.5.1 | < 1.4.4

9 vendors · 27 products

References

32 links
Show all 32 references