rsync: Heap-based buffer over-read in receive_xattr function
Published Nov 6, 2017
9.8
CRITICALCVSS 3.1
EPSS 5.78%
Description
The receive_xattr function in xattrs.c in rsync 3.1.2 and 3.1.3-development does not check for a trailing '\0' character in an xattr name, which allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) or possibly have unspecified other impact by sending crafted data to the daemon.
Affected products
No data.
Configuration 2
- 12.04
- 14.04
- 16.04
- 17.10
- 7.0
- 8.0
- 9.0
No data.
Red Hat Enterprise Linux 5
rsync
Will not fix
Red Hat Enterprise Linux 6
rsync
Will not fix
Red Hat Enterprise Linux 7
rsync
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | rsync | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | rsync | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | rsync | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:P/I:P/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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.78% (0.05775) | 92.86th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.16% (0.05163) | 91.33th | v5 (v2026.06.15) |
| Mar 30, 2025 | 3.51% (0.03513) | 86.51th | v4 (v2025.03.14) |
| Mar 29, 2025 | 11.00% (0.11005) | 89.01th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.51% (0.03513) | 86.83th | v4 (v2025.03.14) |
| Dec 12, 2024 | 11.77% (0.11767) | 95.54th | v3 (v2023.03.01) |
| Nov 18, 2024 | 11.77% (0.11767) | 95.50th | v3 (v2023.03.01) |
| Jun 2, 2023 | 8.67% (0.08667) | 93.56th | v3 (v2023.03.01) |
| May 9, 2023 | 9.50% (0.09505) | 93.81th | v3 (v2023.03.01) |
| May 8, 2023 | 9.80% (0.09804) | 93.89th | v3 (v2023.03.01) |
| Mar 30, 2023 | 7.68% (0.07683) | 93.12th | v3 (v2023.03.01) |
| Mar 7, 2023 | 9.37% (0.09373) | 93.70th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.26% (0.02262) | 50.78th | v1 |
| Jan 6, 2022 | 2.26% (0.02262) | 50.28th | v1 |
| Sep 1, 2021 | 2.26% (0.02262) | 77.65th | v1 |
| Apr 14, 2021 | 2.26% (0.02262) | 0.00th | v1 |
References (10)
- https://access.redhat.com/security/cve/CVE-2017-16548 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1511411 Issue Tracking
- https://bugzilla.samba.org/show_bug.cgi?id=13112 x_refsource_CONFIRMIssue Tracking
- https://git.samba.org/rsync.git/?p=rsync.git%3Ba=commit%3Bh=47a63d90e71d3e19e0e96052bb8c6b9cb140ecc1 x_refsource_CONFIRM
- https://lists.debian.org/debian-lts-announce/2017/12/msg00020.html mailing-listx_refsource_MLISTThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-16548
- https://usn.ubuntu.com/3543-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3543-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-16548
- https://www.debian.org/security/2017/dsa-4068 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2017-16548 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1511411 | Issue Tracking | |
| https://bugzilla.samba.org/show_bug.cgi?id=13112 | x_refsource_CONFIRMIssue Tracking | |
| https://git.samba.org/rsync.git/?p=rsync.git%3Ba=commit%3Bh=47a63d90e71d3e19e0e96052bb8c6b9cb140ecc1 | x_refsource_CONFIRM | |
| https://lists.debian.org/debian-lts-announce/2017/12/msg00020.html | mailing-listx_refsource_MLISTThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-16548 | ||
| https://usn.ubuntu.com/3543-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://usn.ubuntu.com/3543-2/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2017-16548 | ||
| https://www.debian.org/security/2017/dsa-4068 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.