OpenSUSE Linux update for pdns-recursor
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2020-10030 CVE-2020-10995 CVE-2020-12244 |
| CWE-ID | CWE-125 CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Opensuse Operating systems & Components / Operating system SUSE Linux Operating systems & Components / Operating system |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Out-of-bounds read
EUVDB-ID: #VU28143
Risk: Low
CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2020-10030
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition when processing a hostname via the gethostname() function. A local user with ability to change system hostname can trigger out-of-bounds read error and read contents of memory on the system.
MitigationUpdate the affected packages.
Opensuse: 15.1
SUSE Linux: 15
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Input validation error
EUVDB-ID: #VU28141
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-2020-10995
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 DNS responses. A remote attacker who controls a malicious DNS server can send a specially crafted response and perform a denial of service (DoS) attack against third-party DNS servers.
The attack is triggered by random subdomains in the NSDNAME in NS records.
MitigationUpdate the affected packages.
Opensuse: 15.1
SUSE Linux: 15
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html
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: #VU28142
Risk: Medium
CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2020-12244
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a spoofing attack.
The vulnerability exists due to records in the answer section of a NXDOMAIN response lacking an SOA are not properly validated in SyncRes::processAnswer. A remote attacker with ability to perform a Man-in-the-Middle (MitM) attack can send a NXDOMAIN answer for a name that does exist and bypass DNSSEC validation.
Successful exploitation of the vulnerability may allow an attacker to perform a spoofing attack.
Update the affected packages.
Opensuse: 15.1
SUSE Linux: 15
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html
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.
