Amazon Linux AMI update for openldap

1) NULL pointer dereference

EUVDB-ID: #VU77252

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-2953

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the ber_memalloc_x() function. A remote attacker can send specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

i686:
    openldap-servers-sql-2.4.40-16.37.amzn1.i686
    openldap-devel-2.4.40-16.37.amzn1.i686
    openldap-debuginfo-2.4.40-16.37.amzn1.i686
    openldap-2.4.40-16.37.amzn1.i686
    openldap-clients-2.4.40-16.37.amzn1.i686
    openldap-servers-2.4.40-16.37.amzn1.i686

src:
    openldap-2.4.40-16.37.amzn1.src

x86_64:
    openldap-debuginfo-2.4.40-16.37.amzn1.x86_64
    openldap-clients-2.4.40-16.37.amzn1.x86_64
    openldap-devel-2.4.40-16.37.amzn1.x86_64
    openldap-servers-sql-2.4.40-16.37.amzn1.x86_64
    openldap-servers-2.4.40-16.37.amzn1.x86_64
    openldap-2.4.40-16.37.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

openldap: before 2.4.40-16.37

External links

http://alas.aws.amazon.com/ALAS-2023-1804.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.