CVE-2020-10760
Vulnerability Summary
Timeline
Description
A use-after-free flaw was found in all samba LDAP server versions before 4.10.17, before 4.11.11, before 4.12.4 used in a AC DC configuration. A Samba LDAP user could use this flaw to crash samba.
CVSS Metrics
- v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- v2.0•MEDIUM•Score: 4AV:N/AC:L/Au:S/C:N/I:N/A:P
EPSS Trends
Current EPSS score: 2.66%• Percentile: 85%
Techniques & Countermeasures
- CWE-416•Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
Affected Systems
- alpine•samba
≥ 4.5.0, < 4.10.17-r0 | ≥ 4.5.0, < 4.11.14-r0 | ≥ 4.5.0, < 4.12.5-r0 | ≥ 4.5.0, < 4.12.5-r0 | ≥ 4.5.0, < 4.12.5-r0 | ≥ 4.5.0, < 4.12.5-r0 | ≥ 4.5.0, < 4.12.5-r0 | ≥ 4.5.0, < 4.12.5-r0 | ≥ 4.5.0, < 4.12.5-r0 | ≥ 4.5.0, < 4.12.5-r0 | ≥ 4.5.0, < 4.12.5-r0 | ≥ 4.5.0, < 4.12.5-r0 | ≥ 4.5.0, < 4.12.5-r0 | ≥ 4.5.0, < 4.12.5-r0 | ≥ 4.5.0, < 4.12.5-r0
- canonical•ubuntu_linux
18.04 | 19.10 | 20.04
- debian•samba
< 2:4.12.5+dfsg-1 | < 2:4.12.5+dfsg-1 | < 2:4.12.5+dfsg-1 | < 2:4.12.5+dfsg-1
- fedoraproject•fedora
31
- opensuse•leap
15.1 | 15.2
- samba•samba
≥ 4.5.0, < 4.10.17 | ≥ 4.11.0, < 4.11.11 | ≥ 4.12.0, < 4.12.4
References (11)
- https://bugzilla.redhat.com/show_bug.cgi?id=1849509%3B
- https://www.samba.org/samba/security/CVE-2020-10760.html
- https://usn.ubuntu.com/4409-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YLNQ5GRXUKYRUAOFZ4DUBVN4SMTL6Q2/
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00054.html
- https://security.gentoo.org/glsa/202007-15
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00002.html
- https://lists.debian.org/debian-lts-announce/2020/11/msg00041.html
- https://security.alpinelinux.org/vuln/CVE-2020-10760
- https://security-tracker.debian.org/tracker/CVE-2020-10760