Is CVE-2020-28015 in the CISA KEV catalog?

No. CVE-2020-28015 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-28015?

CVE-2020-28015 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2020-28015?

CVE-2020-28015 has an EPSS score of 0.38% (30th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-28015?

Upgrade exim4 on debian 11 to 4.94.2-1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2020-28015

HIGH

7.8

CVSS v3

NVD

Description

Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters. Local users can alter the behavior of root processes because a recipient address can have a newline character.

How to fix

Remediation Available

exim4Debian

Fixed in:4.94.2-1CVE-2020-28015

exim4Ubuntu

Fixed in:4.82-3ubuntu2.4+esm3USN-4934-2

Fixed in:4.86.2-2ubuntu2.6+esm1USN-4934-2

Fixed in:4.90.1-1ubuntu1.8USN-4934-1

Fixed in:4.93-13ubuntu1.5USN-4934-1

exim4-baseUbuntu

Fixed in:4.82-3ubuntu2.4+esm3USN-4934-2

Fixed in:4.86.2-2ubuntu2.6+esm1USN-4934-2

Fixed in:4.90.1-1ubuntu1.8USN-4934-1

Fixed in:4.93-13ubuntu1.5USN-4934-1

exim4-daemon-heavyUbuntu

Fixed in:4.82-3ubuntu2.4+esm3USN-4934-2

Fixed in:4.86.2-2ubuntu2.6+esm1USN-4934-2

Fixed in:4.90.1-1ubuntu1.8USN-4934-1

Fixed in:4.93-13ubuntu1.5USN-4934-1

exim4-daemon-lightUbuntu

Fixed in:4.82-3ubuntu2.4+esm3USN-4934-2

Fixed in:4.86.2-2ubuntu2.6+esm1USN-4934-2

Fixed in:4.90.1-1ubuntu1.8USN-4934-1

Fixed in:4.93-13ubuntu1.5USN-4934-1

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 VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.38%probability of exploitation in 30 days

30thpercentile

Low risk: more likely to be exploited than 30% of all known CVEs.

References

Vendor Advisory1

exim.org

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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.