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Vulnerability details: VCID-2zq2-qsgf-aaaj
Vulnerability ID VCID-2zq2-qsgf-aaaj
Aliases CVE-2021-22898
Summary curl 7.7 through 7.76.1 suffers from an information disclosure when the `-t` command line option, known as `CURLOPT_TELNETOPTIONS` in libcurl, is used to send variable=content pairs to TELNET servers. Due to a flaw in the option parser for sending NEW_ENV variables, libcurl could be made to pass on uninitialized data from a stack based buffer to the server, resulting in potentially revealing sensitive internal information to the server using a clear-text network protocol.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
System Score Found at
generic_textual Low http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-22898.html
rhas Moderate https://access.redhat.com/errata/RHSA-2021:4511
cvssv3 3.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-22898.json
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
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epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
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epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
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epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
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epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
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epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
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epss 0.00113 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00155 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00155 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00155 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00155 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00155 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00155 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00191 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00201 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00201 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00201 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00201 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00201 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00201 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00201 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00201 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00201 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00201 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00201 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00264 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00264 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00264 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
epss 0.00264 https://api.first.org/data/v1/epss?cve=CVE-2021-22898
rhbs low https://bugzilla.redhat.com/show_bug.cgi?id=1964887
cvssv3.1 8.2 https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
generic_textual HIGH https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
cvssv3.1 Medium https://curl.se/docs/CVE-2021-22898.html
generic_textual Low https://curl.se/docs/CVE-2021-22898.html
generic_textual Low https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22898
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22924
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22945
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22946
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22947
cvssv3.1 5.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 2.6 https://nvd.nist.gov/vuln/detail/CVE-2021-22898
cvssv3 3.1 https://nvd.nist.gov/vuln/detail/CVE-2021-22898
cvssv3.1 3.1 https://nvd.nist.gov/vuln/detail/CVE-2021-22898
archlinux High https://security.archlinux.org/AVG-1995
archlinux High https://security.archlinux.org/AVG-1996
archlinux High https://security.archlinux.org/AVG-1997
archlinux High https://security.archlinux.org/AVG-1998
archlinux Medium https://security.archlinux.org/AVG-1999
archlinux Medium https://security.archlinux.org/AVG-2000
generic_textual Medium https://ubuntu.com/security/notices/USN-5021-1
cvssv3.1 5.3 https://www.oracle.com/security-alerts/cpuapr2022.html
generic_textual MODERATE https://www.oracle.com/security-alerts/cpuapr2022.html
cvssv3.1 6.6 https://www.oracle.com/security-alerts/cpujan2022.html
generic_textual MODERATE https://www.oracle.com/security-alerts/cpujan2022.html
cvssv3.1 5.3 https://www.oracle.com//security-alerts/cpujul2021.html
generic_textual MODERATE https://www.oracle.com//security-alerts/cpujul2021.html
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2021/CVE-2021-22898.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-22898.json
https://api.first.org/data/v1/epss?cve=CVE-2021-22898
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
https://curl.se/docs/CVE-2021-22898.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22898
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22924
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22945
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22946
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22947
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-22576
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-27774
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-27775
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-27776
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-27781
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-27782
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32205
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32206
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32207
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32208
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/curl/curl/commit/39ce47f219b09c380b81f89fe54ac586c8db6bde
https://hackerone.com/reports/1176461
https://lists.apache.org/thread.html/rc713534b10f9daeee2e0990239fa407e2118e4aa9e88a7041177497c@%3Cissues.guacamole.apache.org%3E
https://lists.apache.org/thread.html/rc713534b10f9daeee2e0990239fa407e2118e4aa9e88a7041177497c%40%3Cissues.guacamole.apache.org%3E
https://lists.debian.org/debian-lts-announce/2021/08/msg00017.html
https://lists.debian.org/debian-lts-announce/2022/08/msg00017.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/POOC3UV7V6L4CJ5KA2PTWTNUV5Y72T3Q/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/POOC3UV7V6L4CJ5KA2PTWTNUV5Y72T3Q/
https://ubuntu.com/security/notices/USN-5021-1
https://www.debian.org/security/2022/dsa-5197
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.oracle.com//security-alerts/cpujul2021.html
http://www.openwall.com/lists/oss-security/2021/07/21/4
1964887 https://bugzilla.redhat.com/show_bug.cgi?id=1964887
989228 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989228
ASA-202106-4 https://security.archlinux.org/ASA-202106-4
ASA-202106-5 https://security.archlinux.org/ASA-202106-5
ASA-202106-6 https://security.archlinux.org/ASA-202106-6
ASA-202106-7 https://security.archlinux.org/ASA-202106-7
ASA-202106-8 https://security.archlinux.org/ASA-202106-8
ASA-202106-9 https://security.archlinux.org/ASA-202106-9
AVG-1995 https://security.archlinux.org/AVG-1995
AVG-1996 https://security.archlinux.org/AVG-1996
AVG-1997 https://security.archlinux.org/AVG-1997
AVG-1998 https://security.archlinux.org/AVG-1998
AVG-1999 https://security.archlinux.org/AVG-1999
AVG-2000 https://security.archlinux.org/AVG-2000
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.11.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.11.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_service_communication_proxy:1.15.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_service_communication_proxy:1.15.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:essbase:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:essbase:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*
cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
CVE-2021-22898 https://nvd.nist.gov/vuln/detail/CVE-2021-22898
GLSA-202105-36 https://security.gentoo.org/glsa/202105-36
RHSA-2021:4511 https://access.redhat.com/errata/RHSA-2021:4511
USN-5021-1 https://usn.ubuntu.com/5021-1/
USN-5021-2 https://usn.ubuntu.com/5021-2/
USN-5894-1 https://usn.ubuntu.com/5894-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-22898.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N Found at https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: AV:N/AC:H/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-22898
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-22898
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-22898
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://www.oracle.com/security-alerts/cpuapr2022.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H Found at https://www.oracle.com/security-alerts/cpujan2022.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://www.oracle.com//security-alerts/cpujul2021.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Exploit Prediction Scoring System (EPSS)
Percentile 0.26897
EPSS Score 0.00113
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.