Is CVE-2021-38562 in the CISA KEV catalog?

No. CVE-2021-38562 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-38562?

CVE-2021-38562 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-38562?

CVE-2021-38562 has an EPSS score of 1.71% (75th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-38562?

Upgrade request-tracker4 on debian 11 to 4.4.4+dfsg-2+deb11u1 or later. Fixes are available for 12 affected products.

CVE & CISA-KEV Catalog

CVE-2021-38562

HIGHEPSS 75th pctl

7.5

CVSS v3

NVD

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.

CWE-203

How to fix

Remediation Available

request-tracker4Debian

Fixed in:4.4.4+dfsg-2+deb11u1CVE-2021-38562

Fixed in:4.4.4+dfsg-3CVE-2021-38562

request-tracker4Ubuntu

Fixed in:4.4.2-2ubuntu0.1~esm1USN-6529-1

Fixed in:4.4.3-2+deb10u3build0.20.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.22.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.10.1USN-6529-1

request-tracker5Ubuntu

Fixed in:5.0.1+dfsg-1ubuntu1+esm1USN-7692-1

Fixed in:5.0.5+dfsg-2ubuntu0.1~esm1USN-7692-1

rt4-apache2Ubuntu

Fixed in:4.4.2-2ubuntu0.1~esm1USN-6529-1

Fixed in:4.4.3-2+deb10u3build0.20.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.22.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.10.1USN-6529-1

rt4-clientsUbuntu

Fixed in:4.4.2-2ubuntu0.1~esm1USN-6529-1

Fixed in:4.4.3-2+deb10u3build0.20.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.22.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.10.1USN-6529-1

rt4-db-mysqlUbuntu

Fixed in:4.4.2-2ubuntu0.1~esm1USN-6529-1

Fixed in:4.4.3-2+deb10u3build0.20.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.22.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.10.1USN-6529-1

rt4-db-postgresqlUbuntu

Fixed in:4.4.2-2ubuntu0.1~esm1USN-6529-1

Fixed in:4.4.3-2+deb10u3build0.20.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.22.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.10.1USN-6529-1

rt4-db-sqliteUbuntu

Fixed in:4.4.2-2ubuntu0.1~esm1USN-6529-1

Fixed in:4.4.3-2+deb10u3build0.20.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.22.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.10.1USN-6529-1

rt4-fcgiUbuntu

Fixed in:4.4.2-2ubuntu0.1~esm1USN-6529-1

Fixed in:4.4.3-2+deb10u3build0.20.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.22.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.10.1USN-6529-1

rt4-standaloneUbuntu

Fixed in:4.4.2-2ubuntu0.1~esm1USN-6529-1

Fixed in:4.4.3-2+deb10u3build0.20.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.22.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.04.1USN-6529-1

Fixed in:4.4.4+dfsg-2ubuntu1.23.10.1USN-6529-1

rt5-fcgiUbuntu

Fixed in:5.0.1+dfsg-1ubuntu1+esm1USN-7692-1

Fixed in:5.0.5+dfsg-2ubuntu0.1~esm1USN-7692-1

rt5-standaloneUbuntu

Fixed in:5.0.1+dfsg-1ubuntu1+esm1USN-7692-1

Fixed in:5.0.5+dfsg-2ubuntu0.1~esm1USN-7692-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

1.71%probability of exploitation in 30 days

75thpercentile

Elevated risk: more likely to be exploited than 75% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

docs.bestpractical.com

Third-Party Advisory1

lists.debian.org

Other references1

lists.fedoraproject.org

Related Vulnerabilities

Other CWE-203 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-5753	Medium	5.6	94%	-	Fix
CVE-2003-0190	Medium	5.0	77%	-	Fix
CVE-2017-5715	Medium	5.6	74%	-	Fix
CVE-2018-3639	Medium	5.5	61%	-	Fix
CVE-2023-28770	High	7.5	58%	-	Fix
CVE-2004-1602	Medium	5.0	31%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.