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Red Hat Bugzilla – Attachment 696215 Details for
Bug 910040
CVE-2013-0272 pidgin: MXit protocol stack-based buffer overflow when processing HTTP headers
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[patch]
Local copy of (by Pidgin upstream) proposed patch to fix the CVE-2013-0272 issue
CVE-2013-0272.diff (text/plain), 923 bytes, created by
Jan Lieskovsky
on 2013-02-11 17:00:04 UTC
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Description:
Local copy of (by Pidgin upstream) proposed patch to fix the CVE-2013-0272 issue
Filename:
MIME Type:
Creator:
Jan Lieskovsky
Created:
2013-02-11 17:00:04 UTC
Size:
923 bytes
patch
obsolete
>diff -r 574bdd1627f3 libpurple/protocols/mxit/http.c >--- a/libpurple/protocols/mxit/http.c Wed Jan 16 22:06:45 2013 +0200 >+++ b/libpurple/protocols/mxit/http.c Thu Jan 17 17:40:04 2013 +0200 >@@ -116,11 +116,12 @@ > buflen = session->rx_i; > > /* read bytes from the socket */ >- len = read( session->fd, buf + buflen, sizeof( buf ) - buflen ); >+ len = read( session->fd, buf + buflen, sizeof( buf ) - ( buflen + 1 ) ); > if ( len <= 0 ) { > /* connection has been terminated, or error occurred */ > goto done; > } >+ buf[buflen+len] = '\0'; > > //nextpacket: > >@@ -181,7 +182,11 @@ > g_free( tmp ); > tmp = NULL; > >- if ( buflen > ( ( body - buf ) + bodylen ) ) { >+ if ( buflen + bodylen >= CP_MAX_PACKET ) { >+ /* this packet is way to big */ >+ goto done; >+ } >+ else if ( buflen > ( ( body - buf ) + bodylen ) ) { > /* we have a second packet here */ > next = body + bodylen; > session->rx_res = 0;
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bug 910040
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