Ubuntu update for frr
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2023-38407 CVE-2023-38406 CVE-2023-47235 CVE-2023-47234 |
| CWE-ID | CWE-125 CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Ubuntu Operating systems & Components / Operating system frr (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Out-of-bounds read
EUVDB-ID: #VU82898
Risk: Medium
CVSSv4.0: 6.6 [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-2023-38407
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition during labeled unicast parsing in bgpd/bgp_label.c. A remote attacker can send specially crafted input to the application, trigger an out-of-bounds read error and crash the daemon.
Update the affected package frr to the latest version.
Vulnerable software versionsUbuntu: 22.04 - 23.10
frr (Ubuntu package): before 8.1-1ubuntu1.8
CPE2.3- cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:23.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:23.10:*:*:*:*:*:*:*
- cpe:2.3:a:canonical:frr_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-6498-1
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.
2) Input validation error
EUVDB-ID: #VU82897
Risk: Medium
CVSSv4.0: 6.6 [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-2023-38406
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 in bgpd/bgp_flowspec.c. A remote attacker can send specially crafted input to the application and perform a denial of service (DoS) attack.
MitigationUpdate the affected package frr to the latest version.
Vulnerable software versionsUbuntu: 22.04 - 23.10
frr (Ubuntu package): before 8.1-1ubuntu1.8
CPE2.3- cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:23.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:23.10:*:*:*:*:*:*:*
- cpe:2.3:a:canonical:frr_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-6498-1
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.
3) Input validation error
EUVDB-ID: #VU82900
Risk: Medium
CVSSv4.0: 6.6 [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-2023-47235
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 a malformed BGP UPDATE message with an EOR is processed. A remote attacker can send specially crafted input to the application and perform a denial of service (DoS) attack.
MitigationUpdate the affected package frr to the latest version.
Vulnerable software versionsUbuntu: 22.04 - 23.10
frr (Ubuntu package): before 8.1-1ubuntu1.8
CPE2.3- cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:23.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:23.10:*:*:*:*:*:*:*
- cpe:2.3:a:canonical:frr_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-6498-1
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.
4) Input validation error
EUVDB-ID: #VU82899
Risk: Medium
CVSSv4.0: 6.6 [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-2023-47234
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 a crafted BGP UPDATE message with a MP_UNREACH_NLRI attribute and additional NLRI data (that lacks mandatory path attributes). A remote attacker can send specially crafted messages to the daemon and perform a denial of service (DoS) attack.
MitigationUpdate the affected package frr to the latest version.
Vulnerable software versionsUbuntu: 22.04 - 23.10
frr (Ubuntu package): before 8.1-1ubuntu1.8
CPE2.3- cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:23.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:23.10:*:*:*:*:*:*:*
- cpe:2.3:a:canonical:frr_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-6498-1
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.
