Re: [lucidat_private: qpop3.0b20 and below - notes and

From: Maurycy Prodeus (z33dat_private)
Date: Fri Dec 17 1999 - 05:08:38 PST

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    > These bug only affected 3.0 betas.
    Bullshit ...;P
    In pop_euidl() in file pop_uidl.c (qpop-2.53) :
    
        } else {
    
            sprintf(buffer, "%d %s", msg_id, mp->uidl_str);
            if (nl = index(buffer, NEWLINE)) *nl = 0;
            sprintf(buffer, "%s %d %.128s", buffer, mp->length, from_hdr(p,mp));
            return (pop_msg (p,POP_SUCCESS, buffer)); <-- *here*
          }
    
    It looks good , but .... ;P
    
    pop_msg(POP *p, int stat, const char *format,...)
    
    So this function need format and some other data.
    Luckly for the greatest Qualcomm qpop changes privs so we have only gid mail ,
    but if we have a non-shell account , we can "get" a shell ...
    Ofcourse it's hard to exploit . ( probably we must change some ret ...and put
    there address of shellcode but there is a few problems ... but general i think
    it is POSSIBLE :] )
    
    -= SOLUTION =-
    
    I wrote patch on qpop-2.53 ...
    
    -> cut here <-
    
    --- pop_uidl.c	Thu Oct  7 02:02:44 1999
    +++ pop_uidl.c	Sat Oct  9 20:34:00 1999
    @@ -59,7 +59,7 @@
    
     	sprintf(buffer, "%d %s", msg_id, mp->uidl_str);
             if (nl = index(buffer, NEWLINE)) *nl = 0;
    -	return (pop_msg (p,POP_SUCCESS, buffer));
    +	return (pop_msg (p,POP_SUCCESS,"%s", buffer)); // patched by z33d
           }
         } else {
     	/* yes, we can do this */
    @@ -149,7 +149,7 @@
     	sprintf(buffer, "%d %s", msg_id, mp->uidl_str);
             if (nl = index(buffer, NEWLINE)) *nl = 0;
     	sprintf(buffer, "%s %d %.128s", buffer, mp->length, from_hdr(p, mp));
    -	return (pop_msg (p,POP_SUCCESS, buffer));
    +	return (pop_msg (p,POP_SUCCESS,"%s", buffer)); // patched by z33d
           }
         } else {
     	/* yes, we can do this */
    
    -> cut here <-
    
    - Maurycy Prodeus , z33dat_private -
    *******************************************************************************
    *
    * z33dat_private
    *
    * o Czyj to motor ?
    * x To nie motor to Harley ...
    * o Wiec czyj to Harley ?
    * x Zeda ...
    * <-- pulp fiction
    *
    *******************************************************************************
    <--> I wish I was your SYSADM , just call :)
    



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