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HistoryJul 29, 2022 - 8:34 p.m.

Security Bulletin: Vulnerabilities in Eclipse Jetty affect Rational Service Tester (CVE-2021-28169, CVE-2021-34428, CVE-2021-28163, CVE-2021-28164, CVE-2021-34429, CVE-2021-28165)

2022-07-2920:34:20
www.ibm.com
98

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.8 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

0.802 High

EPSS

Percentile

98.2%

Summary

There are vulnerabilities in Eclipse Jetty that affect Rational Service Tester. Rational Service Tester has addressed the applicable CVEs.

Vulnerability Details

CVEID:CVE-2021-28169
**DESCRIPTION:**Eclipse Jetty could allow a remote attacker to obtain sensitive information, caused by a flaw in the ConcatServlet. By sending a specially-crafted request using a doubly encoded path, an attacker could exploit this vulnerability to obtain sensitive information from protected resources within the WEB-INF directory, and use this information to launch further attacks against the affected system.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/203492 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID:CVE-2021-34428
**DESCRIPTION:**Eclipse Jetty could allow a physical attacker to bypass security restrictions, caused by a session ID is not invalidated flaw when an exception is thrown from the SessionListener#sessionDestroyed() method. By gaining access to the application on the shared computer, an attacker could exploit this vulnerability to bypass access restrictions.
CVSS Base score: 3.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/204227 for the current score.
CVSS Vector: (CVSS:3.0/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N)

CVEID:CVE-2021-28163
**DESCRIPTION:**Eclipse Jetty could allow a remote authenticated attacker to obtain sensitive information, caused by a flaw when the ${jetty.base} directory or the ${jetty.base}/webapps directory is a symlink. By sending a specially-crafted request, an attacker could exploit this vulnerability to obtain webapp directory contents information, and use this information to launch further attacks against the affected system.
CVSS Base score: 2.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/199303 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N)

CVEID:CVE-2021-28164
**DESCRIPTION:**Eclipse Jetty could allow a remote attacker to obtain sensitive information, caused by improper input validation by the default compliance mode. By sending specially-crafted requests with URIs that contain %2e or %2e%2e segments, an attacker could exploit this vulnerability to access protected resources within the WEB-INF directory, and use this information to launch further attacks against the affected system.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/199304 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID:CVE-2021-34429
**DESCRIPTION:**Eclipse Jetty could allow a remote attacker to obtain sensitive information, caused by improper access control. By sending a specially-crafted URI, an attacker could exploit this vulnerability to obtain the content of the WEB-INF directory, and use this information to launch further attacks against the affected system.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/205596 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID:CVE-2021-28165
**DESCRIPTION:**Eclipse Jetty is vulnerable to a denial of service, caused by improper input valistion. By sending a specially-crafted TLS frame, a remote attacker could exploit this vulnerability to cause CPU resources to reach to 100% usage.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/199305 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Affected Product(s) Versions
RST 10.2
RST 10.1
RST 10.0
RST 9.5

Remediation/Fixes

Product VRMF APAR Remediation/Fix
RST 10.2 None <https://download4.boulder.ibm.com/sar/CMA/RAA/0aehl/0/PSIRT49489_RPT-ifix.zip&gt;
RST 10.1 None <https://download4.boulder.ibm.com/sar/CMA/RAA/0aehl/0/PSIRT49489_RPT-ifix.zip&gt;
RST 10.0 None <https://download4.boulder.ibm.com/sar/CMA/RAA/0aehl/0/PSIRT49489_RPT-ifix.zip&gt;
RST 9.5 None <https://download4.boulder.ibm.com/sar/CMA/RAA/0aehl/0/PSIRT49489_RPT-ifix.zip&gt;

Workarounds and Mitigations

None

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.8 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

0.802 High

EPSS

Percentile

98.2%

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