CVE-2012-3523: Command Injection
First published: Sun Nov 11 2012(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ISC INN | <=2.5.2 | |
| ISC INN | =1.4 | |
| ISC INN | =1.4sec | |
| ISC INN | =1.4sec2 | |
| ISC INN | =1.4unoff3 | |
| ISC INN | =1.4unoff4 | |
| ISC INN | =1.5 | |
| ISC INN | =1.5.1 | |
| ISC INN | =1.7 | |
| ISC INN | =1.7.2 | |
| ISC INN | =2.0 | |
| ISC INN | =2.1 | |
| ISC INN | =2.2 | |
| ISC INN | =2.2.1 | |
| ISC INN | =2.2.2 | |
| ISC INN | =2.2.3 | |
| ISC INN | =2.4.0 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2012-3523?
CVE-2012-3523 has a medium severity rating that enables man-in-the-middle attacks.
How do I fix CVE-2012-3523?
To mitigate CVE-2012-3523, upgrade to INN version 2.5.3 or later.
Which versions of INN are affected by CVE-2012-3523?
CVE-2012-3523 affects INN versions before 2.5.3, including 1.4 and all prior 2.x versions.
What type of attack does CVE-2012-3523 allow?
CVE-2012-3523 allows attackers to perform plaintext command injection during encrypted sessions.
Is there a workaround for CVE-2012-3523 if I cannot upgrade?
A temporary workaround for CVE-2012-3523 is to limit the use of STARTTLS until an upgrade can be performed.
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- vendor/isc
- canonical/isc inn
- version/isc inn/2.5.2
- version/isc inn/1.4
- version/isc inn/1.4sec
- version/isc inn/1.4sec2
- version/isc inn/1.4unoff3
- version/isc inn/1.4unoff4
- version/isc inn/1.5
- version/isc inn/1.5.1
- version/isc inn/1.7
- version/isc inn/1.7.2
- version/isc inn/2.0
- version/isc inn/2.1
- version/isc inn/2.2
- version/isc inn/2.2.1
- version/isc inn/2.2.2
- version/isc inn/2.2.3
- version/isc inn/2.4.0