Stack out-of-bounds read in ntpsec (Alpine package)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-6443 |
| CWE-ID | CWE-125 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
ntpsec (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) Stack out-of-bounds read
EUVDB-ID: #VU17182
Risk: Low
CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2019-6443
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: Yes
DescriptionThe vulnerability allows a remote authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a bug in ctl_getitem. A remote attacker can trigger a stack-based buffer over-read in read_sysvars in ntp_control.c in ntpd and perform a denial of service attack.
MitigationInstall update from vendor's website.
Vulnerable software versionsntpsec (Alpine package): 1.1.1-r0 - 1.1.1-r2
External linkshttp://git.alpinelinux.org/aports/commit/?id=6e65ec77c34fcea98b3b7fbef8cb62d3b6dae0d3
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. However, proof of concept for this vulnerability is available.
