NULL pointer dereference in znc (Alpine package)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-13775 |
| CWE-ID | CWE-476 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
znc (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) NULL pointer dereference
EUVDB-ID: #VU29532
Risk: Low
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-13775
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote authenticated user can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Successful exploitation of the vulnerability requires that the echo-message is not enabled and there is no network.
MitigationInstall update from vendor's website.
Vulnerable software versionsznc (Alpine package): 1.8.0-r0
External linkshttp://git.alpinelinux.org/aports/commit/?id=cdfce01d9c38dda01d4e3ca9dd6d267dfa7921b6
http://git.alpinelinux.org/aports/commit/?id=77bef56d80b9c2748cacb4d249cb8af4854a1b03
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
