Security Bulletin
Summary
libexpat is a stream-oriented XML parser library used by IBM Rational ClearCase. IBM Rational ClearCase has addressed the applicable CVEs.
Vulnerability Details
CVEID: CVE-2022-23852
DESCRIPTION: Expat (aka libexpat) could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow in the XML_GetBuffer function. By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 9.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/218007 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2022-23990
DESCRIPTION: Expat (aka libexpat) could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow in the doProlog function. By sending a specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 9.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/218206 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2022-25235
DESCRIPTION: libexpat is vulnerable to a denial of service, caused by improper input validation in xmltok_impl.c. By persuading a victim to open a specially-crafted content with malformed encoding, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 3.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/219782 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
CVEID: CVE-2022-25315
DESCRIPTION: libexpat could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow in storeRawNames. By persuading a victim to open a specially-crafted file, an attacker could overflow a buffer and execute arbitrary code on the system.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/219945 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM Rational ClearCase | 8.0.0 |
| IBM Rational ClearCase | 9.0 |
| IBM Rational ClearCase | 9.0.1 |
| IBM Rational ClearCase | 9.1 |
| IBM Rational ClearCase | 9.0.2 |
| IBM Rational ClearCase | 8.0.1 |
Remediation/Fixes
Apply a fix pack as listed in the table below. The fix pack includes Expat 2.4.6.
|
Affected Versions
|
Applying the fix
|
| 9.1 through 9.1.0.3 | Install Rational ClearCase Fix Pack 3 (9.1.0.3) for 9.1 |
| 9.0.2 through 9.0.2.6 | Install Rational ClearCase Fix Pack 6 (9.0.2.6) for 9.0.2 |
|
9.0.1 through 9.0.1.14
9.0 through 9.0.0.6 | Install Rational ClearCase Fix Pack 14 (9.0.1.14) for 9.0.1 |
For 8.0.X and earlier releases, IBM recommends upgrading to a fixed, supported version/release/platform of the product.
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Change History
25 Jul 2022: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
25 July 2022
UID
ibm16606247