CVE-2019-19344 — Use After Free in Samba

CWE-416 — Use After Free10 documents8 sources
Severity
6.5MEDIUMNVD
EPSS
2.3%
top 15.22%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
SambaRED HAT SambaCanonical Ubuntu Linux+3 more
Timeline
PublishedJan 21
Latest updateMay 24

Description

There is a use-after-free issue in all samba 4.9.x versions before 4.9.18, all samba 4.10.x versions before 4.10.12 and all samba 4.11.x versions before 4.11.5, essentially due to a call to realloc() while other local variables still point at the original buffer.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages6 packages

▶NVDsamba/samba4.9.0 — 4.9.18+2
▶Debiansamba/samba< 2:4.11.5+dfsg-1+3
▶CVEListV5red_hat/sambaall samba 4.10.x versions before 4.10.12, all samba 4.11.x versions before 4.11.5, all samba 4.9.x versions before 4.9.18+2
▶NVDopensuse/leap15.1

Also affects: Ubuntu Linux 16.04, 18.04, 19.04, 19.10

🔴Vulnerability Details

4
GHSA
GHSA-932g-58jj-wp5q: There is a use-after-free issue in all samba 4↗2022-05-24
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CVEList
CVE-2019-19344: There is a use-after-free issue in all samba 4↗2020-01-21
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OSV
CVE-2019-19344: There is a use-after-free issue in all samba 4↗2020-01-21
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OSV
samba vulnerabilities↗2020-01-21
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📋Vendor Advisories

3
Ubuntu
Samba vulnerabilities↗2020-01-21
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Red Hat
samba: Use after free during DNS zone scavenging in Samba AD DC↗2020-01-21
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Debian
CVE-2019-19344: samba - There is a use-after-free issue in all samba 4.9.x versions before 4.9.18, all s...↗2019
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💬Community

2
Bugzilla
CVE-2019-19344 samba: Use after free during DNS zone scavenging in Samba AD DC [fedora-all]↗2020-01-21
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Bugzilla
CVE-2019-19344 samba: Use after free during DNS zone scavenging in Samba AD DC↗2020-01-15
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CVE-2019-19344 — Use After Free in Samba | cvebase