NULL pointer dereference in busybox (Alpine package)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2018-16851 |
| CWE-ID | CWE-476 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
busybox (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: #VU16156
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-16851
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote authenticated attacker to cause DoS condition.
The vulnerability exists due to the entries are cached in a single memory object with a maximum size of 256MB during the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client. A remote attacker can trigger NULL pointer dereference in the LDAP service when this size is reached and cause the process to crash.
MitigationInstall update from vendor's website.
Vulnerable software versionsbusybox (Alpine package): 1.31.1-r16 - 1.31.1-r21
busybox (Alpine package):
External linkshttp://git.alpinelinux.org/aports/commit/?id=76077dfdd8d77220a469c5743b7b7fd3484300a1
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.
