PHP chunk_split()函数整数溢出漏洞

漏洞信息详情

PHP chunk_split()函数整数溢出漏洞

• CNNVD编号：CNNVD-200706-009
• 危害等级： 中危
  
  
• CVE编号：
  CVE-2007-2872
  
• 漏洞类型：
  
  
  数字错误
  
• 发布时间：
  
  2002-02-03
  
• 威胁类型：
  
  
  远程
  
• 更新时间：
  
  2009-09-16
  
• 厂        商：
  
  php
• 漏洞来源：
  Gerhard Wagner

PHP是一种流行的WEB服务器端编程语言。

PHP中的chunk_split函数在处理畸形参数时存在整数溢出漏洞，本地攻击者可能利用此漏洞提升自己的权限。

PHP中chunk_split函数的1963行试图为函数结果分配充分的内存大小，但没有执行任何检查便使用了srclen和chunklen参数块。如果值的块和endlen大于65534字节的话，就会触发整数溢出，分配错误的内存大小，导致堆溢出。

ext/standard/string.c：

1953 static char *php_chunk_split(char *src, int srclen, char *end,

int endlen, int chunklen, int *destlen)

1954 {

1955 char *dest;

1956 char *p, *q;

1957 int chunks; /* complete chunks! */

1958 int restlen;

1959

1960 chunks = srclen / chunklen;

1961 restlen = srclen – chunks * chunklen; /* srclen \\% chunklen */

1962

1963 dest = safe_emalloc((srclen + (chunks + 1) * endlen + 1),

sizeof(char), 0);

1964

1965 for (p = src, q = dest; p ＜ (src + srclen – chunklen + 1); ) {

1966 memcpy(q, p, chunklen);

1967 q += chunklen;

1968 memcpy(q, end, endlen);

1969 q += endlen;

1970 p += chunklen;

1971 }

目前厂商已经发布了升级补丁以修复这个安全问题，补丁下载链接：

http://www.php.net/downloads.php#v5

来源: www.php.net/releases

链接:http://www.php.net/releases/5_2_3.php

来源: FEDORA

名称: FEDORA-2007-2215

链接:https://www.redhat.com/archives/fedora-package-announce/2007-September/msg00397.html

来源: FEDORA

名称: FEDORA-2007-709

链接:https://www.redhat.com/archives/fedora-package-announce/2007-September/msg00354.html

来源: launchpad.net

链接:https://launchpad.net/bugs/173043

来源: issues.rpath.com

链接:https://issues.rpath.com/browse/RPL-1702

来源: issues.rpath.com

链接:https://issues.rpath.com/browse/RPL-1693

来源: XF

名称: php-chunksplit-security-bypass(39398)

链接:http://xforce.iss.net/xforce/xfdb/39398

来源: VUPEN

名称: ADV-2008-0059

链接:http://www.vupen.com/english/advisories/2008/0059

来源: UBUNTU

名称: USN-549-1

链接:http://www.ubuntulinux.org/support/documentation/usn/usn-549-1

来源: UBUNTU

名称: USN-549-2

链接:http://www.ubuntu.com/usn/usn-549-2

来源: TRUSTIX

名称: 2007-0023

链接:http://www.trustix.org/errata/2007/0023/

来源: SECTRACK

名称: 1018186

链接:http://www.securitytracker.com/id?1018186

来源: BID

名称: 24261

链接:http://www.securityfocus.com/bid/24261

来源: HP

名称: HPSBUX02332

链接:http://www.securityfocus.com/archive/1/archive/1/491693/100/0/threaded

来源: BUGTRAQ

名称: 20070601 SEC Consult SA-20070601-0 :: PHP chunk_split() integer overflow

链接:http://www.securityfocus.com/archive/1/archive/1/470244/100/0/threaded

来源: MISC

链接:http://www.sec-consult.com/291.html

来源: REDHAT

名称: RHSA-2007:0891

链接:http://www.redhat.com/support/errata/RHSA-2007-0891.html

来源: REDHAT

名称: RHSA-2007:0890

链接:http://www.redhat.com/support/errata/RHSA-2007-0890.html

来源: REDHAT

名称: RHSA-2007:0888

链接:http://www.redhat.com/support/errata/RHSA-2007-0888.html

来源: www.php.net

链接:http://www.php.net/releases/4_4_8.php

来源: www.php.net

链接:http://www.php.net/ChangeLog-4.php

来源: OPENPKG

名称: OpenPKG-SA-2007.020

链接:http://www.openpkg.com/security/advisories/OpenPKG-SA-2007.020.html

来源: MANDRIVA

名称: MDKSA-2007:187

链接:http://www.mandriva.com/security/advisories?name=MDKSA-2007:187

来源: GENTOO

名称: GLSA-200710-02

链接:http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml

来源: VUPEN

名称: ADV-2007-3386

链接:http://www.frsirt.com/english/advisories/2007/3386

来源: VUPEN

名称: ADV-2007-2061

链接:http://www.frsirt.com/english/advisories/2007/2061

来源: support.avaya.com

链接:http://support.avaya.com/elmodocs2/security/ASA-2007-449.htm

来源: SLACKWARE

名称: SSA:2007-152-01

链接:http://slackware.com/security/viewer.php?l=slackware-security&y=2007&m=slackware-security.482863

来源: SECUNIA

名称: 28318

链接:http://secunia.com/advisories/28318

来源: SECUNIA

名称: 27864

链接:http://secunia.com/advisories/27864

来源: SECUNIA

名称: 27545

链接:http://secunia.com/advisories/27545

来源: SECUNIA

名称: 27377

链接:http://secunia.com/advisories/27377

来源: SECUNIA

名称: 27351

链接:http://secunia.com/advisories/27351

来源: SECUNIA

名称: 27110

链接:http://secunia.com/advisories/27110

来源: SECUNIA

名称: 27102

链接:http://secunia.com/advisories/27102

来源: SECUNIA

名称: 27037

链接:http://secunia.com/advisories/27037

来源: SECUNIA

名称: 26967

链接:http://secunia.com/advisories/26967

来源: SECUNIA

名称: 26930

链接:http://secunia.com/advisories/26930

来源: SECUNIA

名称: 26895

链接:http://secunia.com/advisories/26895

来源: SECUNIA

名称: 26871

链接:http://secunia.com/advisories/26871

来源: SECUNIA

名称: 26838

链接:http://secunia.com/advisories/26838

来源: SECUNIA

名称: 26231

链接:http://secunia.com/advisories/26231

来源: SECUNIA

名称: 26048

链接:http://secunia.com/advisories/26048

来源: SECUNIA

名称: 25535

链接:http://secunia.com/advisories/25535

来源: SECUNIA

名称: 25456

链接:http://secunia.com/advisories/25456

来源: REDHAT

名称: RHSA-2007:0889

链接:http://rhn.redhat.com/errata/RHSA-2007-0889.html

来源: SUSE

名称: SUSE-SA:2007:044

链接:http://lists.opensuse.org/opensuse-security-announce/2007-07/msg00006.html

来源: HP

名称: HPSBUX02308

链接:http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01345501

来源: HP

名称: SSRT080010

链接:http://h20000.www2.hp.co