CVE-2021-38562: bestpractical request_tracker Observable Discrepancy
CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2021-38562DEBIAN-CVE-2021-38562DLA-3057-1
Published 18-10-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-38562 is a high (CVSS 7.5) Observable Discrepancy vulnerability in bestpractical request_tracker. EPSS estimates a 1.84% chance of exploitation in the next 30 days, higher than 78.7% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
1.84%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 18-10-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Best Practical Request Tracker (RT) 4.2 before 4.2.17, 4.4 before 4.4.5, and 5.0 before 5.0.2 allows sensitive information disclosure via a timing attack against lib/RT/REST2/Middleware/Auth.pm.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
1.84%
Chance of exploitation in the next 30 days
Percentile
79%
Versus all other CVEs
30-day change
0.00 pp
From 1.84% on 21-09-2026
21-09-202621-10-2026
EPSS score1.84%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian3 products
- request-tracker4< 4.4.1-3+deb9u4 | < 4.4.4+dfsg-3
- request-tracker5< 5.0.3+dfsg-1
- debian_linuxEOL9.0
Ubuntu2 products
- request-tracker4All versions (No fix recorded) | < 4.4.2-2ubuntu0.1~esm1 | < 4.4.3-2+deb10u3build0.20.04.1 | < 4.4.4+dfsg-2ubuntu1.22.04.1 | < 4.4.4+dfsg-2ubuntu2
- request-tracker5< 5.0.1+dfsg-1ubuntu1+esm1
Bestpractical1 product
- request_tracker≥ 4.2.0, < 4.2.17 | ≥ 4.4.0, < 4.4.5 | ≥ 5.0.0, < 5.0.2
Fedoraproject1 product
- fedoraEOL35
4 vendors · 7 products
References
12 links- github.com/bestpractical/rt/commit/70749bb66cb13dd70bd53340c371038a5f3ca57cX Refsource CONFIRMPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2022/06/msg00019.htmlMailing ListX Refsource MLISTThird Party Advisory