5.9

CVE-2018-1000119: sinatrarb rack-protection Observable Discrepancy

Modified
AliasesUBUNTU-CVE-2018-1000119DSA-4247-1GHSA-688c-3x49-6rqj
Published 07-03-2018Last modified 05-08-2024

Vulnerability summary

CVE-2018-1000119 is a medium (CVSS 5.9) Observable Discrepancy vulnerability in sinatrarb rack-protection. EPSS estimates a 2.40% chance of exploitation in the next 30 days, higher than 84% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.9, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.9/10
010
Medium · v3.0 (NVD)
EPSS score
2.40%
0%100%
Low · 0.00 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 3
RHSA-2018:1060RHSA-2020:4366RHSA-2021:1313

Timeline

  1. 07-03-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

Sinatra rack-protection versions 1.5.4 and 2.0.0.rc3 and earlier contains a timing attack vulnerability in the CSRF token checking that can result in signatures can be exposed. This attack appear to be exploitable via network connectivity to the ruby application. This vulnerability appears to have been fixed in 1.5.5 and 2.0.0.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

2.40%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.40% 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.

Debian1 product
  • ruby-rack-protection< 1.5.3-2+deb9u1
RubyGems1 product
  • rack-protection< 1.5.5 | ≥ 2.0.0.beta1, < 2.0.0
Sinatrarb1 product
Ubuntu1 product
  • ruby-rack-protection< 1.5.3-2+deb9u1build0.16.04.1 | < 1.5.3-2+deb9u1build0.18.04.1

4 vendors · 4 products

References

12 links
Show all 12 references