Security Bulletin: Multiple Vulnerabilities in Expat component shipped with IBM Rational ClearCase ( CVE-2022-22822, CVE-2022-22823, CVE-2022-22824, CVE-2022-22825, CVE-2022-22826, CVE-2022-22827 )

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-2022-22823
DESCRIPTION: Expat could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow of build_model in xmlparse.c. By persuading a victim to open a specially-crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/216907 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)

CVEID: CVE-2022-22827
DESCRIPTION: Expat could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow of storeAtts in xmlparse.c. By persuading a victim to open a specially-crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/216901 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)

CVEID: CVE-2022-22822
DESCRIPTION: Expat could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow of addBinding in xmlparse.c. By persuading a victim to open a specially-crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/216908 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)

CVEID: CVE-2022-22826
DESCRIPTION: Expat could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow of nextScaffoldPart in xmlparse.c. By persuading a victim to open a specially-crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/216904 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)

CVEID: CVE-2022-22824
DESCRIPTION: Expat could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow of defineAttribute in xmlparse.c. By persuading a victim to open a specially-crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/216906 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)

CVEID: CVE-2022-22825
DESCRIPTION: Expat could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow of lookup in xmlparse.c. By persuading a victim to open a specially-crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/216905 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

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References

Complete CVSS v3 Guide
On-line Calculator v3

Off

libexpat Home page

libexpat project changes

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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Tips

Security Bulletin: Multiple Vulnerabilities in Expat component shipped with IBM Rational ClearCase ( CVE-2022-22822, CVE-2022-22823, CVE-2022-22824, CVE-2022-22825, CVE-2022-22826, CVE-2022-22827 )