Medium: python-ldap

Issue Overview:

python-ldap before 3.4.0 is vulnerable to a denial of service when ldap.schema is used for untrusted schema definitions, because of a regular expression denial of service (ReDoS) flaw in the LDAP schema parser. By sending crafted regex input, a remote authenticated attacker could exploit this vulnerability to cause a denial of service condition. (CVE-2021-46823)

Affected Packages:

python-ldap

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update python-ldap to update your system.

New Packages:

aarch64:  
    python-ldap-2.4.15-2.amzn2.0.3.aarch64  
    python-ldap-debuginfo-2.4.15-2.amzn2.0.3.aarch64  
  
i686:  
    python-ldap-2.4.15-2.amzn2.0.3.i686  
    python-ldap-debuginfo-2.4.15-2.amzn2.0.3.i686  
  
src:  
    python-ldap-2.4.15-2.amzn2.0.3.src  
  
x86_64:  
    python-ldap-2.4.15-2.amzn2.0.3.x86_64  
    python-ldap-debuginfo-2.4.15-2.amzn2.0.3.x86_64  

Additional References

Red Hat: CVE-2021-46823

Mitre: CVE-2021-46823