CVE-2021-32066
Last modified
CVE-2021-32066 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack.". EPSS estimates a 2.91% chance of exploitation in the next 30 days.
Description
An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ruby-Lang | Ruby | >= 2.6.0, <= 2.6.7 |
| Ruby-Lang | Ruby | >= 2.7.0, <= 2.7.3 |
| Ruby-Lang | Ruby | >= 3.0.0, <= 3.0.1 |
| Oracle | Jd Edwards Enterpriseone Tools | < 9.2.6.1 |
References
- https://github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922aPatch, Third Party Advisory
- https://hackerone.com/reports/1178562Exploit, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/10/msg00009.htmlThird Party Advisory
- https://security.netapp.com/advisory/ntap-20210902-0004/Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
- https://github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922aPatch, Third Party Advisory
- https://hackerone.com/reports/1178562Exploit, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/10/msg00009.htmlThird Party Advisory
- https://security.netapp.com/advisory/ntap-20210902-0004/Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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