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» GHSA-28xp-g7f6-7mhf
Description
Syncthing version 0.14.33 and older erronously versions symlinks when they are deleted. If a directory is then created with the same name, a file created in that directory, and the file deleted, it is moved into the symlink target. This can lead to symlink traversal resulting in arbitrary file overwrite.
Basic information
Type
reviewed
Severity
high Advisory on GitHub
Open advisory ↗ Repository advisory
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Source code
Browse source ↗ Published (advisory)
2022-05-14 03:49:59 UTC
Updated
2023-10-10 16:33:32 UTC
GitHub reviewed
2023-07-26 22:17:40 UTC
NVD published
2018-01-02
EPSS Score
Score
Percentile
0.27%
50.16%
CVSS Scores
Base score
Version
Severity
Vector
7.5
3.0
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CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
CWEs
CWE id
Name
CWE-59
Improper Link Resolution Before File Access ('Link Following')
Affected packages (1)
Vulnerable version ranges and first patched releases as published by GitHub.
Ecosystem
Package
Vulnerable range
First patched
Vulnerable functions
go
github.com/syncthing/syncthing <= 0.14.33
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cvelogic
Threat Intelligence