Bug 1214675 (CVE-2022-48560)

Summary:	VUL-0: CVE-2022-48560: python3: A use-after-free exists in Python through 3.9 via heappushpop in heapq
Product:	[Novell Products] SUSE Security Incidents	Reporter:	Cathy Hu <cathy.hu>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	RESOLVED FIXED	QA Contact:	Security Team bot <security-team>
Severity:	Major
Priority:	P3 - Medium	CC:	mcepl, security-team
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/376067/
Whiteboard:	CVSSv3.1:SUSE:CVE-2022-48560:6.2:(AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Cathy Hu 2023-08-28 08:57:05 UTC

CVE-2022-48560

A use-after-free exists in Python through 3.9 via heappushpop in heapq.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-48560
https://www.cve.org/CVERecord?id=CVE-2022-48560
https://bugs.python.org/issue39421

Comment 1 Cathy Hu 2023-08-28 08:58:00 UTC

Affected:
- SUSE:SLE-12:Update/python3                                          3.4.10

Not affected:

- SUSE:SLE-11-SP1:Update/python                                       2.6.9    
- SUSE:SLE-11-SP1:Update/python-base                                  2.6.9    
    
- SUSE:SLE-12-SP1:Update/python                                       2.7.18    
- SUSE:SLE-12-SP1:Update/python-base                                  2.7.18    
- SUSE:SLE-12-SP4:Update/python                                       2.7.18    
- SUSE:SLE-12-SP4:Update/python-base                                  2.7.18    
- SUSE:SLE-15:Update/python                                           2.7.18    
- SUSE:SLE-15:Update/python-base                                      2.7.18    
- openSUSE:Factory/python                                             2.7.18       
    
- SUSE:SLE-12-SP3:Update:Products:Teradata:Update/python36  3.6.15    
- SUSE:SLE-12-SP5:Update/python36                           3.6.15    
- SUSE:SLE-15-SP3:Update/python36                           3.6.15    
- SUSE:SLE-15:Update/python36                               3.6.15    
    
- SUSE:SLE-15-SP3:Update/python39                           3.9.17    
- openSUSE:Factory/python39                                 3.9.17    
    
- SUSE:ALP:Source:Standard:1.0/python310                    3.10.10    
- SUSE:SLE-15-SP4:Update/python310                          3.10.12    
- openSUSE:Factory/python310                                3.10.12    
    
- SUSE:ALP:Source:Standard:1.0/python311                    3.11.2    
- SUSE:SLE-15-SP4:Update/python311                          3.11.4    
- openSUSE:Factory/python311                                3.11.4

Comment 2 Matej Cepl 2023-09-07 18:14:34 UTC

This must be a mistake: https://github.com/python/cpython/issues/83602 is from 2020 and it has been since then fixed everywhere (development was then future 3.9 and 3.6 was still maintained then).

Suggesting to close as INVALID.

Comment 4 Matej Cepl 2023-11-27 13:55:33 UTC

OK, just looking at https://github.com/fedora-python/cpython/pull/61 I had to try to reproduce with our python-base-2.7.18-39.2 and this reproducer script:

    import heapq

    class h(int):
        def __lt__(self, o):
            del list1[:]
            return NotImplemented

    list1 = []

    heapq.heappush(list1, h(0))
    print(list1)
    heapq.heappushpop(list1, 1)

And it doesn’t crash:

    [0]
    Traceback (most recent call last):
      File "/tmp/CVE-2022-48560-proof.py", line 12, in <module>
        heapq.heappushpop(list1, 1)
    IndexError: index out of range

which is correct.

Comment 5 Matej Cepl 2023-11-27 13:58:49 UTC

Which actually is not correct.

Comment 6 Matej Cepl 2023-11-27 17:53:53 UTC

Actually, it is correct. So, I truly cannot reproduce on Python 2.7.

Comment 10 Maintenance Automation 2024-05-16 08:30:02 UTC

SUSE-SU-2024:1667-1: An update that solves three vulnerabilities and has two security fixes can now be installed.

Category: security (moderate)
Bug References: 1214675, 1219306, 1219559, 1220970, 1222537
CVE References: CVE-2022-48560, CVE-2023-27043, CVE-2023-52425
Maintenance Incident: [SUSE:Maintenance:33822](https://smelt.suse.de/incident/33822/)
Sources used:
SUSE Linux Enterprise Workstation Extension 12 12-SP5 (src):
 python-base-2.7.18-33.32.1
SUSE Linux Enterprise High Performance Computing 12 SP5 (src):
 python-2.7.18-33.32.1, python-doc-2.7.18-33.32.1, python-base-2.7.18-33.32.1
SUSE Linux Enterprise Server 12 SP5 (src):
 python-2.7.18-33.32.1, python-doc-2.7.18-33.32.1, python-base-2.7.18-33.32.1
SUSE Linux Enterprise Server for SAP Applications 12 SP5 (src):
 python-2.7.18-33.32.1, python-doc-2.7.18-33.32.1, python-base-2.7.18-33.32.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.