CVE-2012-3523
The STARTTLS implementation in nnrpd in INN before 2.5.3 does not properly restrict I/O buffering...
CVE-2012-3523 is a medium vulnerability (CVSS 6.8) in Isc Inn, published November 11, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.23%, the 88th percentile. Fixed in inn2 2.5.3-1.
- Severity
- 6.8 MediumCVSS 2.0, NVD
- Exploit chance
- 3.23%EPSS, 88th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
2.5.3-1inn2 +2 more
Description
The STARTTLS implementation in nnrpd in INN before 2.5.3 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.
Exploit likelihood
Affected products
Affected packages
What each source reports
NVD Score used
The STARTTLS implementation in nnrpd in INN before 2.5.3 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.
- Record
CVE-2012-3523- CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE ListNo score
The STARTTLS implementation in nnrpd in INN before 2.5.3 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.
- Record
CVE-2012-3523- Updated
- 2026-11-02
EUVDEUVD-2012-3478No score
The STARTTLS implementation in nnrpd in INN before 2.5.3 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.
- Record
EUVD-2012-3478- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g67q-3725-x6h7No score
The STARTTLS implementation in nnrpd in INN before 2.5.3 does not properly restrict I/O buffering...
The STARTTLS implementation in nnrpd in INN before 2.5.3 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.
- Record
GHSA-g67q-3725-x6h7- Updated
- 2026-11-02
OSVNo score
The STARTTLS implementation in nnrpd in INN before 2.5.3 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.
- Record
CVE-2012-3523- Updated
- 2026-11-02
OSVDEBIAN-CVE-2012-3523No score
The STARTTLS implementation in nnrpd in INN before 2.5.3 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.
- Record
DEBIAN-CVE-2012-3523- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.