Fedora EPEL 8 update for pdns-recursor
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2022-27227 CVE-2022-37428 CVE-2023-26437 |
| CWE-ID | CWE-20 CWE-755 CWE-345 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Fedora Operating systems & Components / Operating system pdns-recursor Operating systems & Components / Operating system package or component |
| Vendor | Fedoraproject |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Input validation error
EUVDB-ID: #VU61631
Risk: Low
CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-27227
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 an incoming IXFR transfer. A remote attacker can pass specially crafted input to the server and cause incomplete zone transfer to be handled as successful transfers.
MitigationInstall updates from vendor's repository.
Vulnerable software versionsFedora: 8
pdns-recursor: before 4.8.4-1.el8
External linkshttp://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2023-d4a7c0e04e
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) Improper Handling of Exceptional Conditions
EUVDB-ID: #VU66715
Risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-37428
CWE-ID:
CWE-755 - Improper Handling of Exceptional Conditions
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect exceptions handling with enabled protobuf logging. A remote attacker can send a specially crafted request to the DNS server and perform a denial of service (DoS) attack.
Install updates from vendor's repository.
Vulnerable software versionsFedora: 8
pdns-recursor: before 4.8.4-1.el8
External linkshttp://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2023-d4a7c0e04e
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) Insufficient verification of data authenticity
EUVDB-ID: #VU74176
Risk: Low
CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-26437
CWE-ID:
CWE-345 - Insufficient Verification of Data Authenticity
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists in the code responsible for protection against spoofing attacks. A remote attacker can send specially crafted DNS queries with spoofed IP address to force the PowerDNS Recursor to mark specific authoritative servers as not available, leading to a denial of service condition.
Install updates from vendor's repository.
Vulnerable software versionsFedora: 8
pdns-recursor: before 4.8.4-1.el8
External linkshttp://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2023-d4a7c0e04e
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.
