Is CVE-2020-35652 in the CISA KEV catalog?

No. CVE-2020-35652 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-35652?

CVE-2020-35652 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2020-35652?

CVE-2020-35652 has an EPSS score of 1.91% (77th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-35652?

Upgrade asterisk on debian 11 to 1:16.15.1~dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2020-35652

MEDIUMEPSS 77th pctl

6.5

CVSS v3

NVD

Description

An issue was discovered in res_pjsip_diversion.c in Sangoma Asterisk before 13.38.0, 14.x through 16.x before 16.15.0, 17.x before 17.9.0, and 18.x before 18.1.0. A crash can occur when a SIP message is received with a History-Info header that contains a tel-uri, or when a SIP 181 response is received that contains a tel-uri in the Diversion header.

How to fix

Remediation Available

asteriskDebian

Fixed in:1:16.15.1~dfsg-1CVE-2020-35652

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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.91%probability of exploitation in 30 days

77thpercentile

Elevated risk: more likely to be exploited than 77% of all known CVEs.

References

Exploit1

issues.asterisk.org

Vendor Advisory3

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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.