SUSE update for cyrus-sasl

1) Out-of-bounds write

EUVDB-ID: #VU23796

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-2019-19906

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The vulnerability exists due to an out-of-bounds write error when processing LDAP queries within the _sasl_add_string() function in common.c file in cyrus-sasl. A remote non-authenticated attacker can create a specially LDAP request to the affected server, trigger off-by-one error in OpenLDAP implementation and crash the service.

Mitigation

Update the affected package cyrus-sasl to the latest version.

Vulnerable software versions

SUSE Enterprise Storage: 6 - 7.1

SUSE Manager Server: 4.1

SUSE Manager Retail Branch Server: 4.1

SUSE Manager Proxy: 4.1

SUSE Linux Enterprise Server for SAP: 15-SP1 - 15-SP2

SUSE Linux Enterprise Server: 15-LTSS - 15-SP2-LTSS

SUSE Linux Enterprise High Performance Computing: 15-ESPOS - 15-SP2-LTSS

SUSE CaaS Platform: 4.0

libsasl2-3-32bit-debuginfo: before 2.1.26-150000.5.13.1

libsasl2-3-32bit: before 2.1.26-150000.5.13.1

cyrus-sasl-plain-32bit-debuginfo: before 2.1.26-150000.5.13.1

cyrus-sasl-plain-32bit: before 2.1.26-150000.5.13.1

cyrus-sasl-gssapi-32bit-debuginfo: before 2.1.26-150000.5.13.1

cyrus-sasl-gssapi-32bit: before 2.1.26-150000.5.13.1

cyrus-sasl-digestmd5-32bit-debuginfo: before 2.1.26-150000.5.13.1

cyrus-sasl-digestmd5-32bit: before 2.1.26-150000.5.13.1

cyrus-sasl-crammd5-32bit-debuginfo: before 2.1.26-150000.5.13.1

cyrus-sasl-crammd5-32bit: before 2.1.26-150000.5.13.1

cyrus-sasl-32bit-debuginfo: before 2.1.26-150000.5.13.1

cyrus-sasl-32bit: before 2.1.26-150000.5.13.1

libsasl2-3-debuginfo: before 2.1.26-150000.5.13.1

libsasl2-3: before 2.1.26-150000.5.13.1

cyrus-sasl-sqlauxprop-debuginfo: before 2.1.26-150000.5.13.1

cyrus-sasl-sqlauxprop: before 2.1.26-150000.5.13.1

cyrus-sasl-saslauthd-debugsource: before 2.1.26-150000.5.13.1

cyrus-sasl-saslauthd-debuginfo: before 2.1.26-150000.5.13.1

cyrus-sasl-saslauthd: before 2.1.26-150000.5.13.1

cyrus-sasl-plain-debuginfo: before 2.1.26-150000.5.13.1

cyrus-sasl-plain: before 2.1.26-150000.5.13.1

cyrus-sasl-otp-debuginfo: before 2.1.26-150000.5.13.1

cyrus-sasl-otp: before 2.1.26-150000.5.13.1

cyrus-sasl-gssapi-debuginfo: before 2.1.26-150000.5.13.1

cyrus-sasl-gssapi: before 2.1.26-150000.5.13.1

cyrus-sasl-digestmd5-debuginfo: before 2.1.26-150000.5.13.1

cyrus-sasl-digestmd5: before 2.1.26-150000.5.13.1

cyrus-sasl-devel: before 2.1.26-150000.5.13.1

cyrus-sasl-debugsource: before 2.1.26-150000.5.13.1

cyrus-sasl-debuginfo: before 2.1.26-150000.5.13.1

cyrus-sasl-crammd5-debuginfo: before 2.1.26-150000.5.13.1

cyrus-sasl-crammd5: before 2.1.26-150000.5.13.1

cyrus-sasl: before 2.1.26-150000.5.13.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20223549-1/

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.