这个漏洞貌似很牛：ZDI-07-008: Apache Tomcat JK Web Server Connector Long URL Stack Overflow Vulnerability

大风

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Mar 3, 2007, 1:26:07 AM3/3/07

to ph4...@googlegroups.com

不管TP和McAFee之争到底如何，我觉得最近TP是越来越牛了，好漏洞一个接一个的报出来！

ZZ：

ZDI-07-008: Apache Tomcat JK Web Server Connector Long URL Stack

Overflow Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-07-008.html

March 2, 2007

-- CVE ID:

CVE-2007-0774

-- Affected Vendor:

Apache

-- Affected Products:

Tomcat JK Web Server Connector 1.2.19

Tomcat JK Web Server Connector 1.2.20

Tomcat 4.1.34

Tomcat 5.5.20

-- TippingPoint(TM) IPS Customer Protection:

TippingPoint IPS customers have been protected against this vulnerability since February 26, 2007 by Digital Vaccine protection filter ID 5152. For further product information on the TippingPoint IPS:

http://www.tippingpoint.com

-- Vulnerability Details:

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apache Tomcat JK Web Server Connector.

Authentication is not required to exploit this vulnerability.

The specific flaw exists in the URI handler for the mod_jk.so library, map_uri_to_worker(), defined in native/common/jk_uri_worker_map.c. When parsing a long URL request, the URI worker map routine performs an unsafe memory copy. This results in a stack overflow condition which can be leveraged to execute arbitrary code.

-- Vendor Response:

Apache has issued an update to correct this vulnerability. More details can be found at:

http://tomcat.apache.org/connectors-doc/miscellaneous/changelog.html

-- Disclosure Timeline:

2007.02.16 - Vulnerability reported to vendor

2007.02.26 - Digital Vaccine released to TippingPoint customers

2007.03.02 - Coordinated public release of advisory

-- Credit:

This vulnerability was discovered by an anonymous researcher.

-- About the Zero Day Initiative (ZDI):

Established by TippingPoint, a division of 3Com, The Zero Day Initiative

(ZDI) represents a best-of-breed model for rewarding security researchers for responsibly disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research through the ZDI can find more information and sign-up at:

http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is used.

3Com does not re-sell the vulnerability details or any exploit code.

Instead, upon notifying the affected product vendor, 3Com provides its customers with zero day protection through its intrusion prevention technology. Explicit details regarding the specifics of the vulnerability are not exposed to any parties until an official vendor patch is publicly available. Furthermore, with the altruistic aim of helping to secure a broader user base, 3Com provides this vulnerability information confidentially to security vendors (including competitors) who have a vulnerability protection or mitigation product.

axis

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Mar 3, 2007, 3:29:38 AM3/3/07

to Ph4nt0m

看了一下源文件：

const char *map_uri_to_worker(jk_uri_worker_map_t *uw_map,
const char *uri, jk_logger_t *l)
{
unsigned int i;
char *url_rewrite;
const char *rv = NULL;
char url[JK_MAX_URI_LEN+1]; // 这里定义

JK_TRACE_ENTER(l);

if (!uw_map || !uri) {
JK_LOG_NULL_PARAMS(l);
JK_TRACE_EXIT(l);
return NULL;
}
if (*uri != '/') {
jk_log(l, JK_LOG_WARNING,
"Uri %s is invalid. Uri must start with /", uri);
JK_TRACE_EXIT(l);
return NULL;
}
for (i = 0; i < strlen(uri); i++) // 这里开始拷贝，溢出了
if (uri[i] == ';')
break;
else
url[i] = uri[i];
url[i] = '\0';

......

在jk_uri_worker_map.h 中有定义
#define JK_MAX_URI_LEN 4095

所以超过4096个字节的url长度传递过去，就造成了栈溢出。

希望大家继续跟进。

On 3月3日, 下午2时26分, 大风 <opensys...@gmail.com> wrote:
> 不管TP和McAFee之争到底如何，我觉得最近TP是越来越牛了，好漏洞一个接一个的报出

> 来！
>
> ZZ：
>
> ZDI-07-008: Apache Tomcat JK Web Server Connector Long URL Stack

> Overflow Vulnerabilityhttp://www.zerodayinitiative.com/advisories/ZDI-07-008.html

> March 2, 2007
>
> -- CVE ID:
> CVE-2007-0774
>
> -- Affected Vendor:
> Apache
>
> -- Affected Products:
> Tomcat JK Web Server Connector 1.2.19
> Tomcat JK Web Server Connector 1.2.20
> Tomcat 4.1.34
> Tomcat 5.5.20
>
> -- TippingPoint(TM) IPS Customer Protection:
> TippingPoint IPS customers have been protected against this vulnerability
> since February 26, 2007 by Digital Vaccine protection filter ID 5152. For
> further product information on the TippingPoint IPS:
>

> http://www.tippingpoint.com<http://www.tippingpoint.com/>

> http://www.zerodayinitiative.com<http://www.zerodayinitiative.com/>

better0332

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Mar 3, 2007, 4:08:17 AM3/3/07

to ph4...@googlegroups.com

哇……是啊，*uri长度没限制哦……哈哈

-----邮件原件-----
发件人: ph4...@googlegroups.com [mailto:ph4...@googlegroups.com] 代表 axis
发送时间: 2007年3月3日 16:30
收件人: Ph4nt0m
主题: [Ph4nt0m] Re: 这个漏洞貌似很牛：ZDI-07-008: Apache Tomcat JK Web

Server Connector Long URL Stack Overflow Vulnerability