Heap-based buffer overflow in dnsmasq (Alpine package)
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-25681 |
| CWE-ID | CWE-122 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
dnsmasq (Alpine package) Operating systems & Components / Operating system package or component |
| Vendor | Alpine Linux Development Team |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Heap-based buffer overflow
EUVDB-ID: #VU49840
Risk: High
CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-25681
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in "sort_rrset()" when DNSSEC is used. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall update from vendor's website.
Vulnerable software versionsdnsmasq (Alpine package): 2.81-r0 - 2.82-r0
External linkshttp://git.alpinelinux.org/aports/commit/?id=a15e4f2f871b2eba5b89654ccff9fb9b95f19cbc
http://git.alpinelinux.org/aports/commit/?id=0bb6e1e51413b6e390e0fe2471e60057346ce519
http://git.alpinelinux.org/aports/commit/?id=8e0a99d327346c97a25d2e7103480d0c41c0f4e9
http://git.alpinelinux.org/aports/commit/?id=b0ea8cb6658527d733f801d3183d555681f18da2
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.
