[asterisk-bugs] [JIRA] (ASTERISK-26927) pjproject_bundled: Crash on pj_ssl_get_info() while ioqueue_on_read_complete().

[Alexander Traud (JIRA)]

Alexander Traud created ASTERISK-26927:
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             Summary: pjproject_bundled: Crash on pj_ssl_get_info() while ioqueue_on_read_complete().
                 Key: ASTERISK-26927
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26927
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Resources/res_pjsip/Bundling
    Affects Versions: 14.3.1, 13.14.1, GIT
            Reporter: Alexander Traud
            Severity: Critical
         Attachments: 0048-r5576-svn-backport-tls-crash.patch

When the Asterisk channel driver {{res_pjsip}} offers SIP-over-TLS, sometimes, not reproducible, Asterisk crashes in {{pj_ssl_sock_get_info()}} because a NULL pointer was read. The attached patch avoids this crash.

>From my point of view, this is a security issue because an outside, unauthenticated attacker might be able to tear down your Asterisk. However although explained to the PJProject team, they made the fix (and therefore the issue) public already. Consequently, it does not make any sense not to disclose it within Asterisk. Finally, I do not know hot to trigger this issue on purpose. I faced this issue three times within four months.



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