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ibmIBMA701AFC8C238BDFFC275CACF75BFA2343212CCA8077B0C43D13D17FB1392C9ED
HistoryMar 17, 2021 - 1:48 p.m.

Security Bulletin: z/TPF is affected by OpenSSL vulnerabilities

2021-03-1713:48:39
www.ibm.com
22

0.008 Low

EPSS

Percentile

82.3%

JSON

Summary

The z/TPF version of OpenSSL was updated to address the vulnerabilities described by CVE-2021-23840 and CVE-2021-23841.

Vulnerability Details

CVEID:CVE-2021-23840
**DESCRIPTION:**OpenSSL is vulnerable to a denial of service, caused by an integer overflow in CipherUpdate. By sending an overly long argument, an attacker could exploit this vulnerability to cause the application to crash.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/196848 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)

CVEID:CVE-2021-23841
**DESCRIPTION:**OpenSSL is vulnerable to a denial of service, caused by a NULL pointer dereference in the X509_issuer_and_serial_hash() function. By parsing the issuer field, an attacker could exploit this vulnerability to cause the application to crash.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/196847 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) Version(s)
z/Transaction Processing Facility 1.1

Remediation/Fixes

Product VRMF APAR Remediation/First Fix
z/TPF 1.1 PJ46436 Apply the APAR, which is available for download from the TPF Family Products: Maintenance web page.

Workarounds and Mitigations

None

CPENameOperatorVersion
tpfeq1.1

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0.008 Low

EPSS

Percentile

82.3%

JSON
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