DEBIAN-CVE-2022-43551

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Source
https://security-tracker.debian.org/tracker/CVE-2022-43551
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-43551.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2022-43551
Upstream
Published
2022-12-23T15:15:15Z
Modified
2025-09-30T05:17:20.161208Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

A vulnerability exists in curl <7.87.0 HSTS check that could be bypassed to trick it to keep using HTTP. Using its HSTS support, curl can be instructed to use HTTPS instead of using an insecure clear-text HTTP step even when HTTP is provided in the URL. However, the HSTS mechanism could be bypassed if the host name in the given URL first uses IDN characters that get replaced to ASCII counterparts as part of the IDN conversion. Like using the character UTF-8 U+3002 (IDEOGRAPHIC FULL STOP) instead of the common ASCII full stop (U+002E) .. Then in a subsequent request, it does not detect the HSTS state and makes a clear text transfer. Because it would store the info IDN encoded but look for it IDN decoded.

References

Affected packages

Debian:11 / curl

Package

Name
curl
Purl
pkg:deb/debian/curl?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

7.*

7.74.0-1.3
7.74.0-1.3+deb11u1
7.74.0-1.3+deb11u2
7.74.0-1.3+deb11u3
7.74.0-1.3+deb11u4
7.74.0-1.3+deb11u5
7.74.0-1.3+deb11u6
7.74.0-1.3+deb11u7~bpo11+1
7.74.0-1.3+deb11u7
7.74.0-1.3+deb11u8
7.74.0-1.3+deb11u9
7.74.0-1.3+deb11u10
7.74.0-1.3+deb11u11
7.74.0-1.3+deb11u12
7.74.0-1.3+deb11u13
7.74.0-1.3+deb11u14
7.74.0-1.3+deb11u15
7.79.1-1
7.79.1-2
7.79.1-3~exp1
7.79.1-3~exp2
7.80.0-1
7.80.0-2
7.80.0-3
7.81.0-1~bpo11+1
7.81.0-1
7.82.0-1
7.82.0-2~bpo11+1
7.82.0-2
7.83.0-1
7.83.1-1
7.83.1-2
7.84.0-1
7.84.0-2~bpo11+1
7.84.0-2
7.85.0-1~bpo11+1
7.85.0-1
7.86.0-1
7.86.0-2
7.86.0-3
7.87.0-1~bpo11+1
7.87.0-1
7.87.0-2~bpo11+1
7.87.0-2
7.88.1-1~bpo11+1
7.88.1-1
7.88.1-2~exp1
7.88.1-2~exp2
7.88.1-2~exp3
7.88.1-2~exp4
7.88.1-2
7.88.1-3
7.88.1-4
7.88.1-5
7.88.1-6
7.88.1-7~bpo11+1
7.88.1-7~bpo11+2
7.88.1-7~exp1
7.88.1-7
7.88.1-8~exp1
7.88.1-8
7.88.1-9
7.88.1-10
7.88.1-11

8.*

8.0.1-1~exp1
8.2.1-1
8.2.1-2~bpo12+1
8.2.1-2
8.3.0-1
8.3.0-2~bpo12+1
8.3.0-2~exp1
8.3.0-2
8.3.0-3
8.4.0-1
8.4.0-2~bpo12+1
8.4.0-2
8.5.0-1
8.5.0-1+exp1
8.5.0-2~bpo12+1
8.5.0-2
8.5.0-2+exp1
8.6.0-1
8.6.0-1.1
8.6.0-2
8.6.0-3
8.6.0-3.1~exp1
8.6.0-3.1~exp2
8.6.0-3.1
8.6.0-3.2
8.6.0-4
8.7.1-1
8.7.1-1+exp1
8.7.1-2
8.7.1-3
8.7.1-4
8.7.1-5~bpo12+1
8.7.1-5
8.7.1-5+exp1
8.8.0-1~bpo12+1
8.8.0-1
8.8.0-1+exp1
8.8.0-1+exp2
8.8.0-2
8.8.0-3
8.8.0-4
8.9.0-1
8.9.0-2
8.9.0-3
8.9.1-1
8.9.1-2~bpo12+1
8.9.1-2
8.10.0-1
8.10.0-2
8.10.1-1~bpo12+1
8.10.1-1
8.10.1-2
8.11.0-1
8.11.1-1~bpo12+1
8.11.1-1
8.12.0+git20250209.89ed161+ds-1~bpo12+1
8.12.0+git20250209.89ed161+ds-1
8.12.1-1
8.12.1-2~bpo12+1
8.12.1-2
8.12.1-3~bpo12+1
8.12.1-3
8.13.0~rc-1~exp1
8.13.0~rc-1~exp2
8.13.0~rc2-1
8.13.0~rc2-2
8.13.0~rc3-1
8.13.0~rc3-1+exp1
8.13.0-1
8.13.0-1+exp1
8.13.0-2
8.13.0-2+exp1
8.13.0-3
8.13.0-4
8.13.0-4+exp1
8.13.0-5~bpo12+1
8.13.0-5
8.13.0-5+exp1
8.14.0~rc1-1+exp1
8.14.0~rc2-1+exp1
8.14.0~rc3-1+exp1
8.14.0-1
8.14.0-1+exp1
8.14.1-1~bpo12+1
8.14.1-1
8.14.1-2~bpo12+1
8.14.1-2
8.14.1-2+exp1
8.15.0~rc1-1exp1
8.15.0~rc2-1~exp1
8.15.0~rc3-1~exp1
8.15.0-1~bpo13+1
8.15.0-1~exp1
8.15.0-1
8.16.0~rc1-1~exp1
8.16.0~rc2-1
8.16.0~rc2-2
8.16.0~rc3-1
8.16.0-1~bpo13+1
8.16.0-1
8.16.0-1+exp1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / curl

Package

Name
curl
Purl
pkg:deb/debian/curl?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.86.0-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / curl

Package

Name
curl
Purl
pkg:deb/debian/curl?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.86.0-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / curl

Package

Name
curl
Purl
pkg:deb/debian/curl?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
7.86.0-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}