Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-3737 |
CWE-ID | CWE-835 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system python3.8-minimal (Ubuntu package) Operating systems & Components / Operating system package or component python3.8 (Ubuntu package) Operating systems & Components / Operating system package or component libpython3.8-stdlib (Ubuntu package) Operating systems & Components / Operating system package or component python3.9 (Ubuntu package) Operating systems & Components / Operating system package or component libpython3.9-stdlib (Ubuntu package) Operating systems & Components / Operating system package or component python3.9-minimal (Ubuntu package) Operating systems & Components / Operating system package or component |
Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU59089
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-3737
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop. A remote attacker who controls a malicious server can force the client to enter an infinite loop on a 100 Continue response.
MitigationUpdate the affected package python3.8 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 21.04
python3.8-minimal (Ubuntu package): before 3.8.10-0ubuntu1~20.04.2
python3.8 (Ubuntu package): before 3.8.10-0ubuntu1~20.04.2
libpython3.8-stdlib (Ubuntu package): before 3.8.10-0ubuntu1~20.04.2
python3.9 (Ubuntu package): before 3.9.5-3ubuntu0~21.04.1
libpython3.9-stdlib (Ubuntu package): before 3.9.5-3ubuntu0~21.04.1
python3.9-minimal (Ubuntu package): before 3.9.5-3ubuntu0~21.04.1
External linkshttp://ubuntu.com/security/notices/USN-5201-1
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.