Buffer overflow in heimdal (Alpine package)
| Risk | Critical |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2011-4862 |
| CWE-ID | CWE-119 |
| Exploitation vector | Network |
| Public exploit | This vulnerability is being exploited in the wild. |
| Vulnerable software Subscribe |
heimdal (Alpine package) Operating systems & Components / Operating system package or component |
| Vendor | Alpine Linux Development Team |
Security Bulletin
This security bulletin contains one critical risk vulnerability.
1) Buffer overflow
EUVDB-ID: #VU3031
Risk: Critical
CVSSv3.1: 9.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C]
CVE-ID: CVE-2011-4862
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to buffer overflow in the encrypt_keyid() function of telnetd. A remote attacker can send a very large encryption key to telnetd daemon, trigger buffer overflow and execute arbitrary code with root privileges.
Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.
Note: the vulnerability was being actively exploited.
Install update from vendor's website.
Vulnerable software versionsheimdal (Alpine package): 1.3.3-r2
External linkshttp://git.alpinelinux.org/aports/commit/?id=77e78b8f7202366649fb6f10196a767c3d0ce3b3
http://git.alpinelinux.org/aports/commit/?id=bb7500d2700767ec6df3fe37b9f75dc53bc91347
http://git.alpinelinux.org/aports/commit/?id=f81ee55cee797b4203340cebc3f15691ac93faeb
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. However, a fully functional exploit for this vulnerability is available.
