Out-of-bounds read in pdns-recursor (Alpine package)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2018-16855 |
| CWE-ID | CWE-125 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
pdns-recursor (Alpine package) Operating systems & Components / Operating system package or component |
| Vendor | Alpine Linux Development Team |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Out-of-bounds read
EUVDB-ID: #VU16147
Risk: Low
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-2018-16855
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to out-of-bounds memory read while computing the hash of the query for a packet cache lookup. A remote attacker can send a specially crafted DNS query and cause the service to crash.
MitigationInstall update from vendor's website.
Vulnerable software versionspdns-recursor (Alpine package): 4.1.1-r0 - 4.1.7-r0
External linkshttp://git.alpinelinux.org/aports/commit/?id=25d9fe89a4cbd43e9f7cc3e4f9c28cf372f28c57
http://git.alpinelinux.org/aports/commit/?id=8c3bc201054c136b08669104b22bf6105dee54de
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.
