#VU50989 Resource exhaustion in httplib2 - CVE-2021-21240
Published: February 28, 2021
Vulnerability identifier: #VU50989
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-21240
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
httplib2
httplib2
Software vendor:
httplib2
httplib2
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion by tricking the application to connect to a malicious server that responds with long series of "xa0" characters in the "www-authenticate" header.
Remediation
Install updates from vendor's website.