Security Bulletin: IBM Security Verify Password Synchronization Plug-in for Windows AD affected by multiple vulnerabilities (CVE-2021-20488, CVE-2021-20494, CVE-2021-20572, CVE-2021-20573, CVE-2021-20574)

Summary

IBM has announced a release for IBM Security Verify Password Synchronization Plug-in for Windows AD to address several security vulnerabilities. The vulnerabilities concern denial of service and account take over.

Vulnerability Details

CVEID:CVE-2021-20572
**DESCRIPTION:**IBM Security Identity Manager Adapters are vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A remote authenticated attacker could overflow the and cause the server to crash.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/199247 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2021-20494
**DESCRIPTION:**IBM Security Identity Manager Active Directory Password Synch Plug-in is vulnerable to a heap based buffer overflow, caused by improper bounds. An authenticared user could overflow the buffer and cause the service to crash.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/197882 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2021-20574
**DESCRIPTION:**IBM Security Identity Manager Adapters could allow a remote authenticated attacker to conduct an LDAP injection. By using a specially crafted request, an attacker could exploit this vulnerability and takeover other accounts.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/199252 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID:CVE-2021-20488
**DESCRIPTION:**IBM Security Identity Manager 6.0.2 could allow an authenticated malicious user to change the passwords of other users in the Windows AD environment when IBM Security Identity Manager Windows Password Synch Plug-in is deployed and configured. IBM X-Force ID: 197789.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/197789 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID:CVE-2021-20573
**DESCRIPTION:**IBM Security Identity Manager Adapters are vulnerable to a heap-based buffer overflow, caused by improper bounds checking. A remote authenticated attacker could overflow the and cause the server to crash.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/199249 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Remediation/Fixes

IBM Security Verify Password Synchronization Plug-in for Windows AD v10.0.1

<https://www.ibm.com/support/pages/ibm-security-verify-adapters-v10x&gt;

ISIM Password Sync Plug-in for WinAD 64-bit v7.0.x|

IBM Security Verify Password Synchronization Plug-in for Windows AD v10.0.1

<https://www.ibm.com/support/pages/ibm-security-verify-adapters-v10x&gt;

ISIM v6.0 Password Sync Plug-in for WinAD 64-bit v6.0.x|

IBM Security Verify Password Synchronization Plug-in for Windows AD v10.0.1

<https://www.ibm.com/support/pages/ibm-security-verify-adapters-v10x&gt;

Workarounds and Mitigations

None