Ubuntu.comUB:CVE-2020-5243CVE-2020-5243
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
69.0%
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
github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1
github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p
launchpad.net/bugs/cve/CVE-2020-5243
nvd.nist.gov/vuln/detail/CVE-2020-5243
security-tracker.debian.org/tracker/CVE-2020-5243
www.cve.org/CVERecord?id=CVE-2020-5243
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
69.0%