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Debian Security Bug TrackerDEBIANCVE:CVE-2023-27534HistoryMar 30, 2023 - 8:15 p.m.
CVE-2023-27534
2023-03-3020:15:07
Debian Security Bug Tracker
security-tracker.debian.org
49
curl
sftp
path traversal
code execution
unix
CVSS3
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.004
Percentile
72.6%
A path traversal vulnerability exists in curl <8.0.0 SFTP implementation causes the tilde (~) character to be wrongly replaced when used as a prefix in the first path element, in addition to its intended use as the first element to indicate a path relative to the user’s home directory. Attackers can exploit this flaw to bypass filtering or execute arbitrary code by crafting a path like /~2/foo while accessing a server with a specific user.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | curl | < 7.88.1-7 | curl_7.88.1-7_all.deb |
| Debian | 11 | all | curl | < 7.74.0-1.3+deb11u8 | curl_7.74.0-1.3+deb11u8_all.deb |
| Debian | 999 | all | curl | < 7.88.1-7 | curl_7.88.1-7_all.deb |
| Debian | 13 | all | curl | < 7.88.1-7 | curl_7.88.1-7_all.deb |
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CVSS3
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.004
Percentile
72.6%
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