CVE-2004-0270
CVSS5.0
发布时间 :2004-11-23 00:00:00
修订时间 :2016-10-17 22:42:49
NMCOE    

[原文]libclamav in Clam AntiVirus 0.65 allows remote attackers to cause a denial of service (crash) via a uuencoded e-mail message with an invalid line length (e.g., a lowercase character), which causes an assert error in clamd that terminates the calling program.


[CNNVD]ClamAV守护进程畸形UUEncoded消息拒绝服务攻击漏洞(CNNVD-200411-084)

        
        Clam Antivirus (clamav)是一款基于UNIX的病毒扫描程序。
        clamav在过滤畸形UUEncoded消息时存在问题,远程攻击者可以利用这个漏洞对病毒扫描模块进行拒绝服务攻击。
        如果消息中包含一行uuencoded编码的消息及一个非法行长度(如由一个小写字母开头) ,当clamd解析时会使程序崩溃而退出。
        

- CVSS (基础分值)

CVSS分值: 5 [中等(MEDIUM)]
机密性影响: [--]
完整性影响: [--]
可用性影响: [--]
攻击复杂度: [--]
攻击向量: [--]
身份认证: [--]

- CPE (受影响的平台与产品)

产品及版本信息(CPE)暂不可用

- OVAL (用于检测的技术细节)

未找到相关OVAL定义

- 官方数据库链接

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0270
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2004-0270
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200411-084
(官方数据源) CNNVD

- 其它链接及资源

http://marc.info/?l=bugtraq&m=107634700823822&w=2
(UNKNOWN)  BUGTRAQ  20040209 clamav 0.65 remote DOS exploit
http://security.gentoo.org/glsa/glsa-200402-07.xml
(VENDOR_ADVISORY)  GENTOO  GLSA-200402-07
http://www.freebsd.org/cgi/query-pr.cgi?pr=62586
(UNKNOWN)  CONFIRM  http://www.freebsd.org/cgi/query-pr.cgi?pr=62586
http://www.securityfocus.com/bid/9610
(VENDOR_ADVISORY)  BID  9610
http://xforce.iss.net/xforce/xfdb/15077
(VENDOR_ADVISORY)  XF  clam-antivirus-uuencoded-dos(15077)

- 漏洞信息

ClamAV守护进程畸形UUEncoded消息拒绝服务攻击漏洞
中危 未知
2004-11-23 00:00:00 2005-05-13 00:00:00
远程  
        
        Clam Antivirus (clamav)是一款基于UNIX的病毒扫描程序。
        clamav在过滤畸形UUEncoded消息时存在问题,远程攻击者可以利用这个漏洞对病毒扫描模块进行拒绝服务攻击。
        如果消息中包含一行uuencoded编码的消息及一个非法行长度(如由一个小写字母开头) ,当clamd解析时会使程序崩溃而退出。
        

- 公告与补丁

        临时解决方法:
        如果您不能立刻安装补丁或者升级,CNNVD建议您采取以下措施以降低威胁:
        * Oliver Eikemeier提供如下解决方案:
        libclamav/message.c:
        --- libclamav/message.c.orig Wed Nov 5 11:59:53 2003
        +++ libclamav/message.c Mon Feb 9 15:17:13 2004
        @@ -878,13 +878,16 @@
         if(strcasecmp(line, "end") == 0)
         break;
        
        - assert(strlen(line) <= 62);
        + if(strlen(line) > 62)
        + break;
        +
         if((line[0] & 0x3F) == ' ')
         break;
        
         len = *line++ - ' ';
        
        - assert((len >= 0) && (len <= 63));
        + if(len < 0 || len > 63)
        + break;
        
         ptr = decode(line, ptr, uudecode, (len & 3) == 0);
         break;
        厂商补丁:
        ClamAV
        ------
        ClamAV CVS已经修正此漏洞,建议用户升级:
        
        http://www.clamav.net/

- 漏洞信息 (23667)

ClamAV Daemon 0.65 Malformed UUEncoded Message Denial Of Service Vulnerability (EDBID:23667)
linux dos
2004-02-09 Verified
0 Oliver Eikemeier
N/A [点击下载]
source: http://www.securityfocus.com/bid/9610/info

A problem in the handling of specially crafted UUEncoded messages has been identified in ClamAV. Because of this, an attacker may prevent the delivery of e-mail to users.

Save the following file to ~/clamtest.mbox:

From -

begin 644 byebye
byebye
end

Then do:

# clamscan --mbox -v ~/clamtest.mbox
assertion "(len >= 0) && (len <= 63)" failed: file "message.c", line 887
Abort (core dumped)		

- 漏洞信息

3894
Clam AntiVirus UUencoded Message DoS
Remote / Network Access Denial of Service
Loss of Availability Upgrade
Vendor Verified

- 漏洞描述

Clam AntiVirus contains a flaw that may allow a remote denial of service. The issue is triggered when a malformed UUEncoded message is sent, and will result in loss of availability for the service.

- 时间线

2004-02-09 2004-02-09
Unknow Unknow

- 解决方案

Upgrade to version 0.67 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

- 相关参考

- 漏洞作者

Unknown or Incomplete
 

 

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