Race condition between reading current working directory and writing a core dump
Published Feb 8, 2020
4.7
MEDIUMCVSS 3.1
EPSS 0.23%
Description
Sander Bos discovered a time of check to time of use (TOCTTOU) vulnerability in apport that allowed a user to cause core files to be written in arbitrary directories.
Affected products
-
- Version 2.14.1StatusaffectedConstraints<2.14.1-0ubuntu3.29+esm2
- Version 2.20.1StatusaffectedConstraints<2.20.1-0ubuntu2.20
- Version 2.20.11StatusaffectedConstraints<2.20.11-0ubuntu8.1
- Version 2.20.9StatusaffectedConstraints<2.20.9-0ubuntu7.8
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
Configuration 1
- 14.04
- 16.04
- 18.04
- 19.04
- 19.10
Configuration 2
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
1 other source (CVE.org) ▾
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L
No CVSS v3.0 score for this CVE.
AV:L/AC:M/Au:N/C:P/I:N/A:N
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 v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.23% (0.00232) | 12.74th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.23% (0.00232) | 14.36th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.04% (0.00044) | 12.95th | v3 (v2023.03.01) |
| May 25, 2024 | 0.04% (0.00044) | 12.27th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 10.26th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.40% (0.01404) | 49.02th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v1 |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Jan 5, 2022 | 0.62% (0.00624) | 46.35th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (2)
- https://usn.ubuntu.com/usn/usn-4171-1 x_refsource_MISCThird Party Advisory
- https://usn.ubuntu.com/usn/usn-4171-2 x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://usn.ubuntu.com/usn/usn-4171-1 | x_refsource_MISCThird Party Advisory | |
| https://usn.ubuntu.com/usn/usn-4171-2 | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.