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Vulnerability Intelligence

CVE-2020-5243

MEDIUM5.7

Denial of Service in uap-core when processing crafted User-Agent strings

Published Feb 20, 2020

Modified 1 years ago

No fix available

Details

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.

References

WEBhttps://github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1 WEBhttps://github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2020-5243

CVSS Analysis

CVSS v3.1

5.7

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

RequiredUI:R

Scope

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

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

Weakness Type (CWE)

Input Validation

Improper Input Validation

Ecosystems

Timeline

PublishedFeb 20, 2020

ModifiedAug 4, 2024

CVE-2020-5243 | Mondoo Vulnerability Intelligence