What is the CVSS score of CVE-2020-5243?

CVE-2020-5243 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 2.3%.

Is there a public PoC exploit available for CVE-2020-5243?

Yes, a public proof-of-concept exploit is available for CVE-2020-5243. Prioritise patching immediately. EPSS: 2.3%.

Is there a patch available for CVE-2020-5243?

Yes, a patch is available for CVE-2020-5243. Update the affected software to the latest version immediately.

Uap Core CVE-2020-5243

HIGH

Improper Input Validation (CWE-20)

2020-02-21 security-advisories@github.com

Denial Of Service Uap Core

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Feb 21, 2020 - 00:15 nvd

HIGH 7.5

DescriptionNVD

uap-core before 0.7.3 is vulnerable to a denial of service attack when processing crafted User-Agent strings. Some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This has been patched in uap-core 0.7.3.

AnalysisAI

uap-core before 0.7.3 is vulnerable to a denial of service attack when processing crafted User-Agent strings. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-20. uap-core before 0.7.3 is vulnerable to a denial of service attack when processing crafted User-Agent strings. Some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This has been patched in uap-core 0.7.3. Affected products include: Uap-Core Project Uap-Core. Version information: before 0.7.3.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.