VulnerabilityModified
CVE-2021-22898
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.
LOW 3.1EPSS 4.51%
Does this matter?
Lower severity and a low EPSS score (4.51%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 3.1 LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
- EPSS
- 4.51% probability · 91th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200, CWE-909
- Affected
- haxx/curl · debian/debian linux · fedoraproject/fedora · oracle/communications cloud native core binding support function · oracle/communications cloud native core network function cloud native environment · oracle/communications cloud native core network repository function · oracle/communications cloud native core network slice selection function · oracle/communications cloud native core service communication proxy · oracle/essbase · oracle/mysql server · siemens/sinec infrastructure network services · splunk/universal forwarder
- Source
- support@hackerone.com
References
- http://www.openwall.com/lists/oss-security/2021/07/21/4Mailing List, Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
- https://curl.se/docs/CVE-2021-22898.htmlExploit, Patch, Vendor Advisory
- https://github.com/curl/curl/commit/39ce47f219b09c380b81f89fe54ac586c8db6bdePatch, Third Party Advisory
- https://hackerone.com/reports/1176461Exploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.apache.org/thread.html/rc713534b10f9daeee2e0990239fa407e2118e4aa9e88a7041177497c%40%3Cissues.guacamole.apache.org%3EMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/08/msg00017.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/08/msg00017.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/POOC3UV7V6L4CJ5KA2PTWTNUV5Y72T3Q/Mailing List, Third Party Advisory
- https://www.debian.org/security/2022/dsa-5197Third Party Advisory
- https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/07/21/4Mailing List, Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
- https://curl.se/docs/CVE-2021-22898.htmlExploit, Patch, Vendor Advisory
- https://github.com/curl/curl/commit/39ce47f219b09c380b81f89fe54ac586c8db6bdePatch, Third Party Advisory
- https://hackerone.com/reports/1176461Exploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.apache.org/thread.html/rc713534b10f9daeee2e0990239fa407e2118e4aa9e88a7041177497c%40%3Cissues.guacamole.apache.org%3EMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/08/msg00017.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/08/msg00017.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/POOC3UV7V6L4CJ5KA2PTWTNUV5Y72T3Q/Mailing List, Third Party Advisory
- https://www.debian.org/security/2022/dsa-5197Third Party Advisory
- https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.