Amazon Linux AMI update for 389-ds-base

1) Stack-based buffer overflow

EUVDB-ID: #VU10254

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-2017-15134

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

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

The weakness exists due to improper handling of Lightweight Directory Access Protocol (LDAP) search filters by the 389-ds-base package. A remote attacker can send a specially crafted LDAP request, trigger a stack-based buffer overflow condition and cause the ns-slapd process to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Update the affected packages.

i686:
    389-ds-base-snmp-1.3.6.1-26.52.amzn1.i686
    389-ds-base-libs-1.3.6.1-26.52.amzn1.i686
    389-ds-base-devel-1.3.6.1-26.52.amzn1.i686
    389-ds-base-1.3.6.1-26.52.amzn1.i686
    389-ds-base-debuginfo-1.3.6.1-26.52.amzn1.i686

src:
    389-ds-base-1.3.6.1-26.52.amzn1.src

x86_64:
    389-ds-base-libs-1.3.6.1-26.52.amzn1.x86_64
    389-ds-base-snmp-1.3.6.1-26.52.amzn1.x86_64
    389-ds-base-1.3.6.1-26.52.amzn1.x86_64
    389-ds-base-debuginfo-1.3.6.1-26.52.amzn1.x86_64
    389-ds-base-devel-1.3.6.1-26.52.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*

External links

https://alas.aws.amazon.com/ALAS-2018-955.html

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.