Multiple vulnerabilities in libreswan
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2023-38710 CVE-2023-38711 CVE-2023-38712 |
| CWE-ID | CWE-617 CWE-476 CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
libreswan Universal components / Libraries / Libraries used by multiple products |
| Vendor | libreswan.org |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Reachable Assertion
EUVDB-ID: #VU79138
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-2023-38710
CWE-ID:
CWE-617 - Reachable Assertion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a reachable assertion when processing IKEv2 REKEY packets. A remote attacker can send specially crafted packets to the system and perform a denial of service (DoS) attack.
Install updates from vendor's website.
Vulnerable software versionslibreswan: 3.20 - 4.11
External linkshttp://github.com/libreswan/libreswan/releases/tag/v4.12
http://libreswan.org/security/CVE-2023-38710/CVE-2023-38710.txt
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.
2) NULL pointer dereference
EUVDB-ID: #VU79139
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-2023-38711
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when processing IKEv1 Quick Mode packets. A remote attacker can send specially crafted packets to the system and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionslibreswan: 4.6 - 4.11
External linkshttp://github.com/libreswan/libreswan/releases/tag/v4.12
http://libreswan.org/security/CVE-2023-38711/CVE-2023-38711.txt
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.
3) Input validation error
EUVDB-ID: #VU79140
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-2023-38712
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when processing IKEv1 ISAKMP SA packets. A remote attacker can send specially crafted input to the system and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionslibreswan: 3.0 - 4.11
External linkshttp://github.com/libreswan/libreswan/releases/tag/v4.12
http://libreswan.org/security/CVE-2023-38712/CVE-2023-38712.txt
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.
