Description
The STARTTLS implementation in Cyrus IMAP Server before 2.4.7 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAccess VectorNetwork
AC:HAccess ComplexityHigh
Au:NAuthenticationNone
Impact
C:PConfidentialityPartial
I:PIntegrityPartial
A:PAvailabilityPartial
Weaknesses
Affected Products
cmu
oss-projectaka panda3d, cveclient, cyrus imap server
and 1 more affected products View all →
Exploitability
Official Patch Available
References
http://www.redhat.com/support/errata/RHSA-2011-0859.html
redhat.com
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061374.html
lists.fedoraproject.org
http://www.debian.org/security/2011/dsa-2258
debian.org
and 17 more references View all →
Unlock Complete Vulnerability Intelligence
Get the full picture for CVE-2011-1926 and every CVE in our database. Create a free account — no credit card required.
Create Free AccountPlain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows