Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-21240 |
CWE-ID | CWE-400 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
httplib2 Other software / Other software solutions |
Vendor | httplib2 |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU50989
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-21240
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionshttplib2: 0.9 - 0.18.1
External linkshttp://github.com/httplib2/httplib2/commit/bd9ee252c8f099608019709e22c0d705e98d26bc
http://github.com/httplib2/httplib2/pull/182
http://github.com/httplib2/httplib2/security/advisories/GHSA-93xj-8mrv-444m
http://pypi.org/project/httplib2
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.