Buffer overflow in exim (Alpine package)
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2018-6789 |
| CWE-ID | CWE-120 |
| Exploitation vector | Network |
| Public exploit | Vulnerability #1 is being exploited in the wild. |
| Vulnerable software Subscribe |
exim (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) Buffer overflow
EUVDB-ID: #VU10442
Risk: High
CVSSv3.1: 9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-6789
CWE-ID:
CWE-120 - Buffer overflow
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists in the SMTP listener due to improper bounds checking. A remote attacker can send a specially crafted message, trigger buffer overflow and execute arbitrary code with privileges of the Exim user.
Successful exploitation of the vulnerability may result in system compromise.
Install update from vendor's website.
Vulnerable software versionsexim (Alpine package): 4.80.1-r0 - 4.90-r0
External linkshttp://git.alpinelinux.org/aports/commit/?id=6212920763e5e59a83b6d2654a92e258ab791ea0
http://git.alpinelinux.org/aports/commit/?id=65097c9cdc4dc822b2fd204057a17312ed7a6b06
http://git.alpinelinux.org/aports/commit/?id=5c9b4c0ddd8d66dbb91fc766661e5442d0bed5c5
http://git.alpinelinux.org/aports/commit/?id=e95c80cf3e6df7464ca979ceb06ea853249403e3
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, proof of concept for this vulnerability is available.
