lrzsz: Integer overflow in src/zm.c:zsdata() causes crash in sz and can leak information to receiver
Published Jun 2, 2021
7.1
HIGHCVSS 3.1
EPSS 0.39%
Description
lrzsz before version 0.12.21~rc can leak information to the receiving side due to an incorrect length check in the function zsdata that causes a size_t to wrap around.
Affected products
No data.
Configuration 1
- ≤ 0.12.20
Configuration 2
- 11
- 12
- 11
- 12
Configuration 3
- 9.0
No data.
Red Hat Enterprise Linux 5
lrzsz
Not affected
Red Hat Enterprise Linux 6
lrzsz
Not affected
Red Hat Enterprise Linux 7
lrzsz
Not affected
Red Hat Enterprise Linux 8
lrzsz
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | lrzsz | Not affected | n/a |
| Red Hat Enterprise Linux 6 | lrzsz | Not affected | n/a |
| Red Hat Enterprise Linux 7 | lrzsz | Not affected | n/a |
| Red Hat Enterprise Linux 8 | lrzsz | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of lrzsz as shipped with Red Hat Enterprise Linux 5, 6, and 7. A patch was already applied for this vulnerability.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
AV:L/AC:L/Au:N/C:P/I:N/A:P
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
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.39% (0.00391) | 30.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.39% (0.00391) | 30.61th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.21% (0.00206) | 40.91th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00045) | 16.02th | v3 (v2023.03.01) |
| Jun 10, 2024 | 0.04% (0.00045) | 14.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00045) | 12.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.25% (0.01247) | 30.57th | v5 (v2026.06.15) |
| Jun 3, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (8)
- http://www.ohse.de/uwe/software/lrzsz.html x_refsource_MISCRelease NotesThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-10195 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1572058 x_refsource_MISCIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/01/msg00027.html mailing-listx_refsource_MLISTIssue TrackingMailing ListThird Party Advisory
- https://lists.suse.com/pipermail/sle-security-updates/2018-April/003955.html?_ga=2.81625751.1026327980.1622040648-1950393542.1547130931 x_refsource_MISCMailing ListThird Party Advisory
- https://lists.suse.com/pipermail/sle-security-updates/2018-April/003956.html?_ga=2.81625751.1026327980.1622040648-1950393542.1547130931 x_refsource_MISCMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-10195
- https://www.cve.org/CVERecord?id=CVE-2018-10195
| Link | Providers | Tags |
|---|---|---|
| http://www.ohse.de/uwe/software/lrzsz.html | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2018-10195 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1572058 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2022/01/msg00027.html | mailing-listx_refsource_MLISTIssue TrackingMailing ListThird Party Advisory | |
| https://lists.suse.com/pipermail/sle-security-updates/2018-April/003955.html?_ga=2.81625751.1026327980.1622040648-1950393542.1547130931 | x_refsource_MISCMailing ListThird Party Advisory | |
| https://lists.suse.com/pipermail/sle-security-updates/2018-April/003956.html?_ga=2.81625751.1026327980.1622040648-1950393542.1547130931 | x_refsource_MISCMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-10195 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-10195 |
Change history (0)
No recorded changes yet.