Memory corruption in dhcp (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-5733
CWE-ID CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
 dhcp (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) Memory corruption

EUVDB-ID: #VU10791

Risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-5733

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the dhcpd due to improper handling of reference counting when processing client requests. A remote attacker can send large amounts of data to the target server can send a large number of packets, trigger a reference counter overflow and cause the target dhcpd service to consume all available memory and crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

dhcp (Alpine package): 4.2.0-r0 - 4.2.4_p2-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=9bab9a346bb17cd49c6b1e3c62b4bfbb86d31042


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.



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