Cleartext Transmission of Sensitive Information Affecting libcurl-devel package, versions <0:7.61.1-18.el8_4.2
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Test your applications- Snyk ID SNYK-RHEL8-LIBCURLDEVEL-1585218
- published 15 Sep 2021
- disclosed 15 Sep 2021
Introduced: 15 Sep 2021
CVE-2021-22947 Open this link in a new tabHow to fix?
Upgrade RHEL:8
libcurl-devel
to version 0:7.61.1-18.el8_4.2 or higher.
This issue was patched in RHSA-2021:4059
.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libcurl-devel
package and not the libcurl-devel
package as distributed by RHEL
.
See How to fix?
for RHEL:8
relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2021-22947
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RWLEC6YVEM2HWUBX67SDGPSY4CQB72OE/
- https://hackerone.com/reports/1334763
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://lists.debian.org/debian-lts-announce/2021/09/msg00022.html
- https://access.redhat.com/errata/RHSA-2021:4059
- http://seclists.org/fulldisclosure/2022/Mar/29
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://lists.debian.org/debian-lts-announce/2022/08/msg00017.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/APOAK4X73EJTAPTSVT7IRVDMUWVXNWGD/
- https://security.gentoo.org/glsa/202212-01
- https://security.netapp.com/advisory/ntap-20211029-0003/
- https://support.apple.com/kb/HT213183
- 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/cpujul2022.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APOAK4X73EJTAPTSVT7IRVDMUWVXNWGD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWLEC6YVEM2HWUBX67SDGPSY4CQB72OE/