Information disclosure in samba (Alpine package)

1) Information disclosure

EUVDB-ID: #VU32350

Risk: Medium

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

CVE-ID: CVE-2015-5330

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

ldb before 1.1.24, as used in the AD LDAP server in Samba 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3, mishandles string lengths, which allows remote attackers to obtain sensitive information from daemon heap memory by sending crafted packets and then reading (1) an error message or (2) a database value.

Mitigation

Install update from vendor's website.

Vulnerable software versions

samba (Alpine package): 3.4.8-r0 - 4.2.3-r3

CPE2.3

• cpe:2.3:o:alpine:samba_alpine_package:3.4.8-r0:*:*:*:*:alpine_linux:*:1.10
• cpe:2.3:o:alpine:samba_alpine_package:4.1.1-r0:*:*:*:*:alpine_linux:*:2.6
• cpe:2.3:o:alpine:samba_alpine_package:4.1.3-r0:*:*:*:*:alpine_linux:*:2.6

External links

https://git.alpinelinux.org/aports/commit/?id=2c8df8d5eb5c12b722deb30952b55b164fc7111a
https://git.alpinelinux.org/aports/commit/?id=47affed1795cc5ca4cdd4625ea53ba85513f0636

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.