Vulnerability Monitor

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CVE-2021-27292

ua-parser-js >= 0.7.14, fixed in 0.7.24, uses a regular expression which is vulnerable to denial of service. If an attacker sends a malicious User-Agent header, ua-parser-js will get stuck processing it for an extended period of time.

Published

2021-03-17T13:15:15.200

Last Modified

2024-11-21T05:57:45.830

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
NVD-CWE-Other

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	ua-parser-js_project	ua-parser-js	< 0.7.24	Yes

References

https://gist.github.com/b-c-ds/6941d80d6b4e694df4bc269493b7be76 Exploit, Third Party Advisory ([email protected])
https://github.com/faisalman/ua-parser-js/commit/809439e20e273ce0d25c1d04e111dcf6011eb566 Patch, Third Party Advisory ([email protected])
https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14 Patch, Third Party Advisory ([email protected])
https://gist.github.com/b-c-ds/6941d80d6b4e694df4bc269493b7be76 Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/faisalman/ua-parser-js/commit/809439e20e273ce0d25c1d04e111dcf6011eb566 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)