Ubuntu update for strongswan
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-41991 |
| CWE-ID | CWE-190 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system strongswan (Ubuntu package) Operating systems & Components / Operating system package or component libstrongswan (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Integer overflow
EUVDB-ID: #VU57553
Risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-41991
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow when processing multiple requests with different certificates. A remote attacker can send specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate the affected package strongswan to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 16.04
strongswan (Ubuntu package): before 5.3.51u buntu3.8+esm1
libstrongswan (Ubuntu package): before 5.3.51u buntu3.8+esm1
External linkshttp://ubuntu.com/security/notices/USN-5111-2
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.
