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Vulnerability Details : CVE-2021-22947

When curl >= 7.20.0 and <= 7.78.0 connects to an IMAP or POP3 server to retrieve data using STARTTLS to upgrade to TLS security, the server can respond and send back multiple responses at once that curl caches. curl would then upgrade to TLS but not flush the in-queue of cached responses but instead continue using and trustingthe responses it got *before* the TLS handshake as if they were authenticated.Using this flaw, it allows a Man-In-The-Middle attacker to first inject the fake responses, then pass-through the TLS traffic from the legitimate server and trick curl into sending data back to the user thinking the attacker's injected data comes from the TLS-protected server.
Publish Date : 2021-09-29 Last Update Date : 2022-08-02
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- CVSS Scores & Vulnerability Types

CVSS Score
4.3
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 345

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2021:4059: curl security update (Moderate) oval:com.redhat.rhsa:def:20214059 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2021-22947

# Product Type Vendor Product Version Update Edition Language
1 OS Apple Macos * * * * Version Details Vulnerabilities
2 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
3 OS Fedoraproject Fedora 33 * * * Version Details Vulnerabilities
4 OS Fedoraproject Fedora 35 * * * Version Details Vulnerabilities
5 Application Haxx Curl * * * * Version Details Vulnerabilities
6 Application Netapp Cloud Backup - * * * Version Details Vulnerabilities
7 Application Netapp Clustered Data Ontap - * * * Version Details Vulnerabilities
8 Application Oracle Communications Cloud Native Core Binding Support Function 1.11.0 * * * Version Details Vulnerabilities
9 Application Oracle Communications Cloud Native Core Network Function Cloud Native Environment 1.10.0 * * * Version Details Vulnerabilities
10 Application Oracle Communications Cloud Native Core Network Repository Function 1.15.0 * * * Version Details Vulnerabilities
11 Application Oracle Communications Cloud Native Core Network Repository Function 1.15.1 * * * Version Details Vulnerabilities
12 Application Oracle Communications Cloud Native Core Network Slice Selection Function 1.8.0 * * * Version Details Vulnerabilities
13 Application Oracle Communications Cloud Native Core Service Communication Proxy 1.15.0 * * * Version Details Vulnerabilities
14 Application Oracle Mysql Server * * * * Version Details Vulnerabilities
15 Application Oracle Peoplesoft Enterprise Peopletools 8.57 * * * Version Details Vulnerabilities
16 Application Oracle Peoplesoft Enterprise Peopletools 8.58 * * * Version Details Vulnerabilities
17 Application Oracle Peoplesoft Enterprise Peopletools 8.59 * * * Version Details Vulnerabilities
18 Application Siemens Sinec Infrastructure Network Services * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Apple Macos 1
Debian Debian Linux 1
Fedoraproject Fedora 2
Haxx Curl 1
Netapp Cloud Backup 1
Netapp Clustered Data Ontap 1
Oracle Communications Cloud Native Core Binding Support Function 1
Oracle Communications Cloud Native Core Network Function Cloud Native Environment 1
Oracle Communications Cloud Native Core Network Repository Function 2
Oracle Communications Cloud Native Core Network Slice Selection Function 1
Oracle Communications Cloud Native Core Service Communication Proxy 1
Oracle Mysql Server 1
Oracle Peoplesoft Enterprise Peopletools 3
Siemens Sinec Infrastructure Network Services 1

- References For CVE-2021-22947

http://seclists.org/fulldisclosure/2022/Mar/29
FULLDISC 20220314 APPLE-SA-2022-03-14-4 macOS Monterey 12.3
https://www.oracle.com/security-alerts/cpujul2022.html
N/A N/A
https://security.netapp.com/advisory/ntap-20211029-0003/ CONFIRM
https://hackerone.com/reports/1334763
https://support.apple.com/kb/HT213183 CONFIRM
https://www.oracle.com/security-alerts/cpuoct2021.html
https://lists.fedoraproject.org/archives/list/[email protected]/message/APOAK4X73EJTAPTSVT7IRVDMUWVXNWGD/
FEDORA FEDORA-2021-1d24845e93
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.debian.org/security/2022/dsa-5197
DEBIAN DSA-5197
https://www.oracle.com/security-alerts/cpuapr2022.html
https://lists.fedoraproject.org/archives/list/[email protected]/message/RWLEC6YVEM2HWUBX67SDGPSY4CQB72OE/
FEDORA FEDORA-2021-fc96a3a749
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf CONFIRM
https://lists.debian.org/debian-lts-announce/2021/09/msg00022.html
MLIST [debian-lts-announce] 20210930 [SECURITY] [DLA 2773-1] curl security update

- Vulnerability Conditions

Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0

- Metasploit Modules Related To CVE-2021-22947

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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