zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c
Published Mar 28, 2018
7.8
HIGHCVSS 3.0
EPSS 0.59%
Description
Zsh before version 5.4.2-test-1 is vulnerable to a buffer overflow in the shell autocomplete functionality. A local unprivileged user can create a specially crafted directory path which leads to code execution in the context of the user who tries to use autocomplete to traverse the before mentioned path. If the user affected is privileged, this leads to privilege escalation.
Affected products
-
- Version before zsh 5.4.2-test-1StatusaffectedConstraints-
- Version
Configuration 2
- 14.04
- 16.04
- 17.10
Configuration 3
- 7.0
Configuration 4
- 6.0
- 7.0
- 6.0
- 7.0
- 6.0
- 7.0
No data.
Red Hat Enterprise Linux 6
zsh-0:4.3.11-8.el6
Fixed · RHSA-2018:1932
Red Hat Enterprise Linux 7
zsh-0:5.0.2-31.el7
Fixed · RHSA-2018:3073
Red Hat Enterprise Linux 5
zsh
Will not fix
Red Hat Enterprise Linux 8
zsh
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | zsh-0:4.3.11-8.el6 | Fixed | RHSA-2018:1932 |
| Red Hat Enterprise Linux 7 | zsh-0:5.0.2-31.el7 | Fixed | RHSA-2018:3073 |
| Red Hat Enterprise Linux 5 | zsh | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | zsh | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
AV:L/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.59% (0.00594) | 46.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.63% (0.00628) | 45.14th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.14% (0.00141) | 31.70th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00084) | 37.52th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.08% (0.00084) | 35.96th | v3 (v2023.03.01) |
| Mar 22, 2023 | 0.08% (0.00084) | 33.96th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00060) | 23.26th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.92% (0.01916) | 77.44th | v2 (v2022.01.01) |
| Dec 23, 2022 | 1.92% (0.01916) | 77.00th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.86% (0.01864) | 75.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.86% (0.01864) | 54.47th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.59% (0.03590) | 68.40th | v1 |
| Jan 6, 2022 | 3.59% (0.03590) | 68.10th | v1 |
| Sep 1, 2021 | 3.59% (0.03590) | 82.08th | v1 |
| Apr 14, 2021 | 3.59% (0.03590) | 0.00th | v1 |
References (12)
- http://www.securityfocus.com/bid/103572 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:1932 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3073 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-1083 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1557382 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/03/msg00038.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2018-1083
- https://security.gentoo.org/glsa/201805-10 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://sourceforge.net/p/zsh/code/ci/259ac472eac291c8c103c7a0d8a4eaf3c2942ed7 x_refsource_CONFIRMPatchThird Party Advisory
- https://usn.ubuntu.com/3608-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-1083
Change history (0)
No recorded changes yet.