Security Bulletin
Summary
There are vulnerabilities in Perl that affect AIX.
Vulnerability Details
DESCRIPTION: Perl is vulnerable to a buffer overflow, caused by recursive S_study_chunk calls in regcomp.c. By using a specially-crafted regular expression, a remote attacker could overflow a buffer and execute arbitrary code on the system.
CVSS Base score: 9.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/183205 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-2020-10878
DESCRIPTION: Perl could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow related to the mishandling of a PL_regkind[OP(n)] == NOTHING situation. By using a specially-crafted regular expression, 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/183204 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-2020-10543
DESCRIPTION: Perl is vulnerable to a heap-based buffer overflow, caused by an integer overflow in the nested regular expression quantifiers. By sending a specially-crafted request, a remote attacker could overflow a buffer and execute arbitrary code on the system.
CVSS Base score: 9.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/183203 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)
Affected Products and Versions
Affected Product(s) | Version(s) |
AIX | 7.1 |
AIX | 7.2 |
VIOS | 3.1 |
The following fileset levels are vulnerable:
Fileset | Lower Level | Upper Level |
perl.rte | 5.20.1.0 | 5.20.1.3 |
perl.rte | 5.28.1.0 | 5.28.1.3 |
Remediation/Fixes
AIX Level | APAR |
7.1.5 | IJ26985 |
7.2.3 | IJ26986 |
7.2.4 | IJ26985 |
VIOS Level | APAR |
3.1.0 | IJ26986 |
3.1.1 | IJ26985 |
AIX Level | Interim Fix |
7.1.5.5 | IJ26985s1a.200812.epkg.Z |
7.1.5.6 | IJ26985s1a.200812.epkg.Z |
7.1.5.7 | IJ26985s1a.200812.epkg.Z |
7.2.3.3 | IJ26986s1a.200813.epkg.Z |
7.2.3.4 | IJ26986s1a.200813.epkg.Z |
7.2.3.5 | IJ26986s1a.200813.epkg.Z |
7.2.3.6 | IJ26986s1a.200813.epkg.Z |
7.2.4.0 | IJ26985s1a.200812.epkg.Z |
7.2.4.1 | IJ26985s1a.200812.epkg.Z |
7.2.4.2 | IJ26985s1a.200812.epkg.Z |
7.2.4.3 | IJ26985s1a.200812.epkg.Z |
7.2.5.0 | IJ26985s1a.200812.epkg.Z |
7.2.5.1 | IJ26985s1a.200812.epkg.Z |
VIOS Level | Interim Fix |
3.1.0.20 | IJ26986s1a.200813.epkg.Z |
3.1.0.21 | IJ26986s1a.200813.epkg.Z |
3.1.0.30 | IJ26986s1a.200813.epkg.Z |
3.1.0.40 | IJ26986s1a.200813.epkg.Z |
3.1.0.50 | IJ26986s1a.200813.epkg.Z |
3.1.1.0 | IJ26985s1a.200812.epkg.Z |
3.1.1.10 | IJ26985s1a.200812.epkg.Z |
3.1.1.20 | IJ26985s1a.200812.epkg.Z |
3.1.1.21 | IJ26985s1a.200812.epkg.Z |
3.1.1.22 | IJ26985s1a.200812.epkg.Z |
3.1.1.25 | IJ26985s1a.200812.epkg.Z |
3.1.1.30 | IJ26985s1a.200812.epkg.Z |
3.1.2.0 | IJ26985s1a.200812.epkg.Z |
3.1.2.10 | IJ26985s1a.200812.epkg.Z |
openssl dgst -sha256 | filename |
389f7f4c299a6236394da168b2c2d6316db2fdc36a1c8ddc69aa3b3053ca2526 | IJ26985s1a.200812.epkg.Z |
e45b0ed34077f3432d5fca86d23a94b79ed34bf544e45ec4ccf83e7d6d0a4b14 | IJ26986s1a.200813.epkg.Z |
Workarounds and Mitigations
Get Notified about Future Security Bulletins
References
Change History
iFixes now listed for AIX 7200-03-06, 7200-04-03, 7200-05-00, and 7200-05-01. iFixes now listed for VIOS 3.1.0.50, 3.1.1.30, 3.1.2.0, and 3.1.2.10.
02 Dec 2020: 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:
04 March 2021
UID
ibm16380428