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[sr #107775] GnuTLS 3.0.0 causes segfault
From: |
anonymous |
Subject: |
[sr #107775] GnuTLS 3.0.0 causes segfault |
Date: |
Tue, 30 Aug 2011 11:59:41 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux i686; rv:6.0) Gecko/20100101 Firefox/6.0 |
Follow-up Comment #9, sr #107775 (project gnutls):
I figured out where those wrong values come from (well, kinda).
In _gnutls_send_int, cipher_size is a size_t. It is assigned the result from
_gnutls_encrypt() in line 437. However, this function returns an int where
negative values are used for errors. Line 440 then indeed checks if
(cipher_size <= 0), however, since size_t is unsigned, this would only be true
if cipher_size == 0.
This code then goes on and tries to send garbage.
Patch for this hopefully is attached, however I'm not sure if the size_t type
is required for other places in this code. Someone with a clue should check
carefully and perhaps split cipher_size up into two different variables. It
might also make sense to use int instead of ssize_t. Dunno.
Now, I only have to figure out why I get GNUTLS_E_COMPRESSION_FAILED (-27)
immediately after the handshake...
(file #23906)
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File name: patch Size:0 KB
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Reply to this item at:
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- [sr #107775] GnuTLS 3.0.0 causes segfault, Jan Steffens, 2011/08/14
- [sr #107775] GnuTLS 3.0.0 causes segfault, Nikos Mavrogiannopoulos, 2011/08/15
- [sr #107775] GnuTLS 3.0.0 causes segfault, Jan Steffens, 2011/08/15
- [sr #107775] GnuTLS 3.0.0 causes segfault, Nikos Mavrogiannopoulos, 2011/08/15
- [sr #107775] GnuTLS 3.0.0 causes segfault, Jan Steffens, 2011/08/16
- [sr #107775] GnuTLS 3.0.0 causes segfault, Nikos Mavrogiannopoulos, 2011/08/16
- [sr #107775] GnuTLS 3.0.0 causes segfault, Andreas Metzler, 2011/08/17
- [sr #107775] GnuTLS 3.0.0 causes segfault, anonymous, 2011/08/22
- [sr #107775] GnuTLS 3.0.0 causes segfault, Nikos Mavrogiannopoulos, 2011/08/22
- [sr #107775] GnuTLS 3.0.0 causes segfault,
anonymous <=
- [sr #107775] GnuTLS 3.0.0 causes segfault, Nikos Mavrogiannopoulos, 2011/08/30