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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2021-22925
HistoryAug 05, 2021 - 9:15 p.m.

CVE-2021-22925

2021-08-0521:15:11
Debian Security Bug Tracker
security-tracker.debian.org
24

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS

0.004

Percentile

74.4%

curl supports the -t command line option, known as CURLOPT_TELNETOPTIONSin libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending NEW_ENV variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.

OSVersionArchitecturePackageVersionFilename
Debian12allcurl<ย 7.88.1-10+deb12u6curl_7.88.1-10+deb12u6_all.deb
Debian11allcurl<ย 7.74.0-1.3+deb11u12curl_7.74.0-1.3+deb11u12_all.deb
Debian999allcurl<ย 8.8.0-4curl_8.8.0-4_all.deb
Debian13allcurl<ย 8.8.0-4curl_8.8.0-4_all.deb

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS

0.004

Percentile

74.4%