cnvd - cnvd-2017-04808

cnvd-2017-04808

Vulnerability from cnvd

Title: Squirrelmail远程代码执行漏洞

Description:

SquirrelMail是一款基于PHP的WEB邮件服务程序。

Squirrelmail的initStream函数的Deliver_SendMail.class.php中存在远程代码执行漏洞，由于escapeshellcmd()并未对空格字符进行转义。攻击者可利用漏洞在远程服务器上越权执行任意代码。

Severity: 高

Patch Name: Squirrelmail远程代码执行漏洞的补丁

Patch Description:

SquirrelMail是一款基于PHP的WEB邮件服务程序。

Squirrelmail的initStream函数的Deliver_SendMail.class.php中存在远程代码执行漏洞，由于escapeshellcmd()并未对空格字符进行转义。攻击者可利用漏洞在远程服务器上越权执行任意代码。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

目前Squirrelmail官方还没有发布相关修复补丁，但第三方提供了修复代码： https://www.wearesegment.com/research/Squirrelmail-Remote-Code-Execution.html

Reference: http://seclists.org/bugtraq/2017/Apr/60

Impacted products

Name
SquirrelMail SquirrelMail <=1.4.22

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-7692"
    }
  },
  "description": "SquirrelMail\u662f\u4e00\u6b3e\u57fa\u4e8ePHP\u7684WEB\u90ae\u4ef6\u670d\u52a1\u7a0b\u5e8f\u3002\r\n\r\nSquirrelmail\u7684initStream\u51fd\u6570\u7684Deliver_SendMail.class.php\u4e2d\u5b58\u5728\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\uff0c\u7531\u4e8eescapeshellcmd()\u5e76\u672a\u5bf9\u7a7a\u683c\u5b57\u7b26\u8fdb\u884c\u8f6c\u4e49\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u5728\u8fdc\u7a0b\u670d\u52a1\u5668\u4e0a\u8d8a\u6743\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002",
  "discovererName": "filippo.cavallarin@wearesegment.com",
  "formalWay": "\u76ee\u524dSquirrelmail\u5b98\u65b9\u8fd8\u6ca1\u6709\u53d1\u5e03\u76f8\u5173\u4fee\u590d\u8865\u4e01\uff0c\u4f46\u7b2c\u4e09\u65b9\u63d0\u4f9b\u4e86\u4fee\u590d\u4ee3\u7801\uff1a\r\nhttps://www.wearesegment.com/research/Squirrelmail-Remote-Code-Execution.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-04808",
  "openTime": "2017-04-20",
  "patchDescription": "SquirrelMail\u662f\u4e00\u6b3e\u57fa\u4e8ePHP\u7684WEB\u90ae\u4ef6\u670d\u52a1\u7a0b\u5e8f\u3002\r\n\r\nSquirrelmail\u7684initStream\u51fd\u6570\u7684Deliver_SendMail.class.php\u4e2d\u5b58\u5728\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\uff0c\u7531\u4e8eescapeshellcmd()\u5e76\u672a\u5bf9\u7a7a\u683c\u5b57\u7b26\u8fdb\u884c\u8f6c\u4e49\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u5728\u8fdc\u7a0b\u670d\u52a1\u5668\u4e0a\u8d8a\u6743\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Squirrelmail\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "SquirrelMail SquirrelMail \u003c=1.4.22"
  },
  "referenceLink": "http://seclists.org/bugtraq/2017/Apr/60",
  "serverity": "\u9ad8",
  "submitTime": "2017-04-20",
  "title": "Squirrelmail\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u6f0f\u6d1e"
}

CVE-2017-7692 (GCVE-0-2017-7692)

Vulnerability from cvelistv5

Published

2017-04-20 14:00

Modified

2024-08-05 16:12

Severity ?

CWE

Summary

SquirrelMail 1.4.22 (and other versions before 20170427_0200-SVN) allows post-authentication remote code execution via a sendmail.cf file that is mishandled in a popen call. It's possible to exploit this vulnerability to execute arbitrary shell commands on the remote server. The problem is in the Deliver_SendMail.class.php with the initStream function that uses escapeshellcmd() to sanitize the sendmail command before executing it. The use of escapeshellcmd() is not correct in this case since it doesn't escape whitespaces, allowing the injection of arbitrary command parameters. The problem is in -f$envelopefrom within the sendmail command line. Hence, if the target server uses sendmail and SquirrelMail is configured to use it as a command-line program, it's possible to trick sendmail into using an attacker-provided configuration file that triggers the execution of an arbitrary command. For exploitation, the attacker must upload a sendmail.cf file as an email attachment, and inject the sendmail.cf filename with the -C option within the "Options > Personal Informations > Email Address" setting.

References

▼	URL	Tags
	https://legalhackers.com/advisories/SquirrelMail-Exploit-Remote-Code-Exec-CVE-2017-7692-Vuln.html	x_refsource_MISC
	http://www.securityfocus.com/bid/98067	vdb-entry, x_refsource_BID
	http://openwall.com/lists/oss-security/2017/04/19/6	x_refsource_MISC
	https://www.exploit-db.com/exploits/41910/	exploit, x_refsource_EXPLOIT-DB
	https://security.gentoo.org/glsa/201709-13	vendor-advisory, x_refsource_GENTOO
	http://www.debian.org/security/2017/dsa-3852	vendor-advisory, x_refsource_DEBIAN
	http://www.securitytracker.com/id/1038312	vdb-entry, x_refsource_SECTRACK
	http://openwall.com/lists/oss-security/2017/04/27/1	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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