CVE-2018-20406
Modules/_pickle.c in Python before 3.7.1 has an integer overflow via a large LONG_BINPUT value that is mishandled during a "resize to twice the size" attempt.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Modules/_pickle.c in Python before 3.7.1 has an integer overflow via a large LONG_BINPUT value that is mishandled during a "resize to twice the size" attempt. This issue might cause memory exhaustion, but is only relevant if the pickle format is used for serializing tens or hundreds of gigabytes of data. This issue is fixed in: v3.4.10, v3.4.10rc1; v3.5.10, v3.5.10rc1, v3.5.7, v3.5.7rc1, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.7, v3.6.7rc1, v3.6.7rc2, v3.6.8, v3.6.8rc1, v3.6.9, v3.6.9rc1; v3.7.1, v3.7.1rc1, v3.7.1rc2, v3.7.2, v3.7.2rc1, v3.7.3, v3.7.3rc1, v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 5.79% probability · 93th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- python/python · debian/debian linux · fedoraproject/fedora
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
- https://access.redhat.com/errata/RHSA-2019:3725
- https://bugs.python.org/issue34656Exploit, Issue Tracking, Patch, Vendor Advisory
- https://github.com/python/cpython/commit/a4ae828ee416a66d8c7bf5ee71d653c2cc6a26ddPatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00011.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46PVWY5LFP4BRPG3BVQ5QEEFYBVEXHCK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AEZ5IQT7OF7Q2NCGIVABOWYGKO7YU3NJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D3LXPABKVLFYUHRYJPM3CSS5MS6FXKS7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ICBEGRHIPHWPG2VGYS6R4EVKVUUF4AQW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSKPGPZQNTAULHW4UH63KGOOUIDE4RRB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TR6GCO3WTV4D5L23WTCBF275VE6BVNI3/
- https://security.netapp.com/advisory/ntap-20190416-0010/
- https://usn.ubuntu.com/4127-1/
- https://usn.ubuntu.com/4127-2/
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
- https://access.redhat.com/errata/RHSA-2019:3725
- https://bugs.python.org/issue34656Exploit, Issue Tracking, Patch, Vendor Advisory
- https://github.com/python/cpython/commit/a4ae828ee416a66d8c7bf5ee71d653c2cc6a26ddPatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/02/msg00011.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46PVWY5LFP4BRPG3BVQ5QEEFYBVEXHCK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AEZ5IQT7OF7Q2NCGIVABOWYGKO7YU3NJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D3LXPABKVLFYUHRYJPM3CSS5MS6FXKS7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ICBEGRHIPHWPG2VGYS6R4EVKVUUF4AQW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSKPGPZQNTAULHW4UH63KGOOUIDE4RRB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TR6GCO3WTV4D5L23WTCBF275VE6BVNI3/
- https://security.netapp.com/advisory/ntap-20190416-0010/
- https://usn.ubuntu.com/4127-1/
- https://usn.ubuntu.com/4127-2/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.