Debian Information for VU#102795

OpenSSL servers contain a buffer overflow during the SSL2 handshake process



Vendor Statement

Please see

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Vendor References




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Debian Security Advisory DSA-136-1                                  Wichert Akkerman
July 30, 2002
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Package        : openssl
Problem type   : multiple remote exploits
Debian-specific: no
CVE            : CAN-2002-0655 CAN-2002-0656 CAN-2002-0657 CAN-2002-0659

The OpenSSL development team has announced that a security audit by A.L.
Digital Ltd and The Bunker, under the DARPA CHATS program, has revealed
remotely exploitable buffer overflow conditions in the OpenSSL code.
Additionaly, the ASN1 parser in OpenSSL has a potential DoS attack
independently discovered by Adi Stav and James Yonan.

CAN-2002-0655 references overflows in buffers used to hold ASCII
representations of integers on 64 bit platforms. CAN-2002-0656
references buffer overflows in the SSL2 server implementation (by
sending an invalid key to the server) and the SSL3 client implementation
(by sending a large session id to the client). The SSL2 issue was also
noticed by Neohapsis, who have privately demonstrated exploit code for
this issue. CAN-2002-0659 references the ASN1 parser DoS issue.

These vulnerabilities have been addressed for Debian 3.0 (woody) in
openssl094_0.9.4-6.woody.0, openssl095_0.9.5a-6.woody.0 and

These vulnerabilities are also present in Debian 2.2 (potato), but no
fix is available at this moment.

We recommend you upgrade your OpenSSL as soon as possible. Note that you
should restart any daemons running SSL. (E.g., ssh or ssl-enabled

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Obtaining updates:

  By hand:
   wget URL
       will fetch the file for you.
   dpkg -i FILENAME.deb
       will install the fetched file.

  With apt:
   deb stable/updates main
       added to /etc/apt/sources.list will provide security updates

Additional information can be found on the Debian security webpages

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Debian 3.0 (stable)
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  Stable was released for alpha, arm, hppa, i386, ia64, m68k, mips, mipsel
, powerpc, s390 and sparc.

  Source archives:
     Size/MD5 checksum:      782 de4c7b85648c7953dc31d3a89c38681c
     Size/MD5 checksum:    42270 e9fbf71f583f1727222eddb8f023472a
     Size/MD5 checksum:      781 534406f61e0229e92f506e9bc92fdaf1
     Size/MD5 checksum:    45542 f4683a2fb7adc0fef97a31ac141e3acd
     Size/MD5 checksum:    38251 ee919ba698cbbfebcf922b19e05bbfeb
     Size/MD5 checksum:  1570392 72544daea16d6c99d656b95f77b01b2d
     Size/MD5 checksum:  2153980 c8261d93317635d56df55650c6aeb3dc
     Size/MD5 checksum:      731 370bd2a3bb4bd957c571b7e0e51837ce
     Size/MD5 checksum:  1892089 99d22f1d4d23ff8b927f94a9df3997b4

  Architecture independent packages:
     Size/MD5 checksum:      978 550d56ffa53e3e8ef26087b1fef5a1c5

  alpha architecture (DEC Alpha)
     Size/MD5 checksum:   735692 786b81d45374fa91a204a578d09dea6b
     Size/MD5 checksum:  1550722 ac0d245d8d2e744d688c2778382513da
     Size/MD5 checksum:   570630 c46d9dcac74f3766a48d8fe36d8dcb05

  hppa architecture (HP PA RISC)
     Size/MD5 checksum:   741398 9a081e5359cdf46e56a1854bcbff7af3
     Size/MD5 checksum:  1434262 b9014a44cbefabce2c446b5b7be640f9
     Size/MD5 checksum:   564284 be33bde9b00138d7ab6639daf9dc4cfe

  i386 architecture (Intel ia32)
     Size/MD5 checksum:   731384 101d86cf6e2e274e5a811a38f5956b2d
     Size/MD5 checksum:   357908 49dd8e2dc866b9bd7639c5e7576e7519
     Size/MD5 checksum:   462026 859c8e6439943d597db12d47ec1ee496
     Size/MD5 checksum:  1293384 3e605b6e1abc0b0f40c6ec3ddf2b9419
     Size/MD5 checksum:   400048 7495feff7cbcae0f816641b8d7537ad1

  ia64 architecture (Intel ia64)
     Size/MD5 checksum:  1614810 48c24d1b8c221e51a1e6f789b2621b40
     Size/MD5 checksum:   763034 13e3e71cc06198e6a481d958854a1f78
     Size/MD5 checksum:   710254 792b4575a78dafac7f99919d9c5a9f78

  mips architecture (MIPS (Big Endian))
     Size/MD5 checksum:   717276 4a2d38551b10dc1316bd3479d044261b
     Size/MD5 checksum:   482968 f37975dfb58f53950e98e8adce007cd9
     Size/MD5 checksum:  1415580 e87350a24e7d0bc4558cc09711246eab

  mipsel architecture (MIPS (Little Endian))
     Size/MD5 checksum:  1409480 70e26b6de02b0749e9d30fb4e8d0bbc3
     Size/MD5 checksum:   475990 1f96c9c2528316857598262b40a9b9ca
     Size/MD5 checksum:   716482 a89cfa547f585e6858593506ed9b2257

  powerpc architecture (PowerPC)
     Size/MD5 checksum:   501824 bfca4d6a8e3b348abb8ed97453349752
     Size/MD5 checksum:   726122 9db6440fb0765c1360a7c09dec78f404
     Size/MD5 checksum:  1386244 06a403323563b590311b1297e4f63a5d

  s390 architecture (IBM S/390)
     Size/MD5 checksum:   730124 6585907e414d4508a66460649de0c701
     Size/MD5 checksum:  1310886 d6e233ab6d3f1ebe4fd9b479713ee662
     Size/MD5 checksum:   495844 afb314f4d0113175d27435485ba2de07

  sparc architecture (Sun SPARC/UltraSPARC)
     Size/MD5 checksum:   736604 ebd2b62518e0602fbf1027686c0eb5e5
     Size/MD5 checksum:   484136 e26006714e97d77159f2d0773e00e636
     Size/MD5 checksum:  1343554 76c3efda7e4a3470c5276cefa63a2448

- --
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Debian Security team <>

Version: 2.6.3ia
Charset: noconv


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