Is CVE-2019-15796 in the CISA KEV catalog?

No. CVE-2019-15796 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-15796?

CVE-2019-15796 has a CVSS v3 base score of 4.7 (MEDIUM).

What is the EPSS score for CVE-2019-15796?

CVE-2019-15796 has an EPSS score of 0.50% (39th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-15796?

Upgrade python-apt on debian 11 to 1.8.5 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2019-15796

MEDIUM

4.7

CVSS v3

NVD

Description

Python-apt doesn't check if hashes are signed in `Version.fetch_binary()` and `Version.fetch_source()` of apt/package.py or in `_fetch_archives()` of apt/cache.py in version 1.9.3ubuntu2 and earlier. This allows downloads from unsigned repositories which shouldn't be allowed and has been fixed in verisions 1.9.5, 1.9.0ubuntu1.2, 1.6.5ubuntu0.1, 1.1.0~beta1ubuntu0.16.04.7, 0.9.3.5ubuntu3+esm2, and 0.8.3ubuntu7.5.

CWE-287Improper Authentication CWE-347

How to fix

Remediation Available

python-aptDebian

Fixed in:1.8.5CVE-2019-15796

python-aptUbuntu

Fixed in:0.9.3.5ubuntu3+esm2USN-4247-3

Fixed in:1.1.0~beta1ubuntu0.16.04.7USN-4247-1

Fixed in:1.6.5ubuntu0.1USN-4247-1

python3-aptUbuntu

Fixed in:0.9.3.5ubuntu3+esm2USN-4247-3

Fixed in:1.1.0~beta1ubuntu0.16.04.7USN-4247-1

Fixed in:1.6.5ubuntu0.1USN-4247-1

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 ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.50%probability of exploitation in 30 days

39thpercentile

Low risk: more likely to be exploited than 39% of all known CVEs.

References

Patch2

Related Vulnerabilities

Other CWE-287 (Improper Authentication) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-35082	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-35078	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2017-7921	Critical	9.8	100%	KEV	-
CVE-2024-7593	Critical	9.8	100%	KEV	-
CVE-2023-46805	High	8.2	100%	KEV + Ransom	-
CVE-2022-40684	Critical	9.8	100%	KEV + Ransom	Fix

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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.