CVE-2023-4641: Shadow-utils: possible password leak during passwd(1) change
First published: Mon Jun 19 2023(Updated: )
A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to store the first entry. This may allow an attacker with enough access to retrieve the password from the memory.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/shadow | <=1:4.5-1.1<=1:4.8.1-1<=1:4.13+dfsg1-1 | 1:4.13+dfsg1-4 |
| redhat/shadow-utils | <4.14.0 | 4.14.0 |
| ubuntu/shadow | <1:4.5-1ubuntu2.5+ | 1:4.5-1ubuntu2.5+ |
| ubuntu/shadow | <1:4.8.1-1ubuntu5.20.04.5 | 1:4.8.1-1ubuntu5.20.04.5 |
| ubuntu/shadow | <1:4.8.1-2ubuntu2.2 | 1:4.8.1-2ubuntu2.2 |
| ubuntu/shadow | <1:4.13+dfsg1-1ubuntu1.1 | 1:4.13+dfsg1-1ubuntu1.1 |
| ubuntu/shadow | <1:4.1.5.1-1ubuntu9.5+ | 1:4.1.5.1-1ubuntu9.5+ |
| ubuntu/shadow | <1:4.13+dfsg1-2<4.14.0 | 1:4.13+dfsg1-2 4.14.0 |
| ubuntu/shadow | <1:4.2-3.1ubuntu5.5+ | 1:4.2-3.1ubuntu5.5+ |
| Shadow-maint Shadow-utils | <4.14.0 | |
| Redhat Codeready Linux Builder | =8.0 | |
| Redhat Codeready Linux Builder | =9.0 | |
| Redhat Codeready Linux Builder For Arm64 | =8.0_aarch64 | |
| Redhat Codeready Linux Builder For Arm64 | =9.0_aarch64 | |
| Redhat Codeready Linux Builder For Ibm Z Systems | =8.0_s390x | |
| Redhat Codeready Linux Builder For Ibm Z Systems | =9.0_s390x | |
| Redhat Codeready Linux Builder For Power Little Endian | =8.0_ppc64le | |
| Redhat Codeready Linux Builder For Power Little Endian | =9.0_ppc64le | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux | =9.0 | |
| Redhat Enterprise Linux For Arm 64 | =8.0 | |
| Redhat Enterprise Linux For Arm 64 | =9.0 | |
| Redhat Enterprise Linux For Ibm Z Systems | =8.0_s390x | |
| Redhat Enterprise Linux For Ibm Z Systems | =9.0_s390x | |
| Redhat Enterprise Linux For Power Little Endian | =8.0_ppc64le | |
| Redhat Enterprise Linux For Power Little Endian | =9.0_ppc64le |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=2215945
- https://access.redhat.com/errata/RHSA-2023:6632
- https://access.redhat.com/errata/RHSA-2023:7112
- https://access.redhat.com/security/cve/CVE-2023-4641
- https://launchpad.net/bugs/cve/CVE-2023-4641
- https://github.com/shadow-maint/shadow/commit/65c88a43a23c2391dcc90c0abda3e839e9c57904
- https://security-tracker.debian.org/tracker/CVE-2023-4641
- https://access.redhat.com/errata/RHSA-2024:0417
- https://ubuntu.com/security/notices/USN-6640-1
- https://www.cve.org/CVERecord?id=CVE-2023-4641
- https://nvd.nist.gov/vuln/detail/CVE-2023-4641
- https://ubuntu.com/security/CVE-2023-4641
- https://access.redhat.com/errata/RHSA-2024:2577
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