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Vulnerability record · CVE-2017-15994 · published 29 October 2017

CVE-2017-15994: Samba rsync vulnerability

Samba · Rsync

rsync 3.1.3-development before 2017-10-24 mishandles archaic checksums, which makes it easier for remote attackers to bypass intended access restrictions. NOTE: the rsync development branch has significant use beyond the rsync developers, e.g., the code has been copied for use in various GitHub projects.

9.8 CVSS 3.0 Critical EPSS 1.0% · top 38.6% CWE-354 · CWE-354
9.8CVSS 3.0 base score, v2 7.5
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

rsync 3.1.3-development before 2017-10-24 mishandles archaic checksums, which makes it easier for remote attackers to bypass intended access restrictions. NOTE: the rsync development branch has significant use beyond the rsync developers, e.g., the code has been copied for use in various GitHub projects.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.samba.org/?p=rsync.git%3Ba=commit%3Bh=7b8a4ecd6ff9cdf4e5d3850ebf822f1e989255b3
https://git.samba.org/?p=rsync.git%3Ba=commit%3Bh=9a480deec4d20277d8e20bc55515ef0640ca1e55
https://git.samba.org/?p=rsync.git%3Ba=commit%3Bh=c252546ceeb0925eb8a4061315e3ff0a8c55b48b
https://git.samba.org/?p=rsync.git%3Ba=commit%3Bh=7b8a4ecd6ff9cdf4e5d3850ebf822f1e989255b3
https://git.samba.org/?p=rsync.git%3Ba=commit%3Bh=9a480deec4d20277d8e20bc55515ef0640ca1e55
https://git.samba.org/?p=rsync.git%3Ba=commit%3Bh=c252546ceeb0925eb8a4061315e3ff0a8c55b48b

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-12084rsync daemon heap buffer overflow via attacker-controlled checksum lengthThe rsync daemon mishandles attacker-controlled checksum lengths (s2length), allowing an out-of-bounds write in the sum2 buffer when MAX_DIGEST_LEN e…EPSS 72%analysed9.8CVE-2017-17434Samba rsync vulnerabilityThe daemon in rsync 3.1.2, and 3.1.3-development before 2017-12-03, does not check for fnamecmp filenames in the daemon_filter_list data structure (i…EPSS 3.3%9.8CVE-2017-16548Samba rsync out-of-bounds read vulnerabilityThe 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 allo…EPSS 5.8%9.1CVE-2026-53791Samba rsync authentication bypass by spoofing vulnerabilityrsync daemon before 3.5.0 contains an IP address spoofing vulnerability that allows unauthenticated remote attackers to bypass IP-based access contro…EPSS 0.71%8.8CVE-2026-70461Samba rsync out-of-bounds write vulnerabilityrsync 3.2.5 before 3.5.0 contains a heap out-of-bounds write vulnerability that allows remote unauthenticated attackers to write one attacker-control…EPSS 0.79%8.7CVE-2026-70455Samba rsync allocation without limits vulnerabilityrsync 3.4.2 before 3.5.0 contains a denial of service vulnerability that allows a remote sender to exhaust system resources by specifying the --zt sh…EPSS 0.78%8.6CVE-2026-70463Samba rsync incorrect authorization vulnerabilityrsync 3.1.0 before 3.5.0 contains an authorization bypass in auth users directive parsing. The auth users parser uses comma-only tokenization when sp…EPSS 0.47%8.5CVE-2026-53803Samba rsync link following vulnerabilityrsync before 3.5.0 contains a symlink following vulnerability that allows local attackers to overwrite arbitrary files by placing a symlink at a pred…EPSS 0.21%

Source: NIST National Vulnerability Database (record CVE-2017-15994), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.