Two vulnerabilities have been found in uw-imap, an IMAP implementation. The Common Vulnerabilities and Exposures project identifies the following problems :

It was discovered that several buffer overflows can be triggered via a long folder extension argument to the tmail or dmail program. This could lead to arbitrary code execution (CVE-2008-5005 ).

It was discovered that a NULL pointer dereference could be triggered by a malicious response to the QUIT command leading to a denial of service (CVE-2008-5006 ).

Red Hat セキュリティアドバイザリ 2009:0275 から：

セキュリティ問題を修正する更新済みの imap パッケージが、Red Hat Enterprise Linux 3 で現在利用可能です。

Red Hat セキュリティレスポンスチームは、この更新は重要度中のセキュリティ影響があると評価しています。

imap パッケージは、IMAP（Internet Message Access Protocol）および POP（Post Office Protocol）メールアクセスプロトコルの両方に対して、サーバーデーモンを提供します。

imap に同梱されている dmail および tmail メール配信ユーティリティで、バッファオーバーフローの欠陥が発見されました。このユーティリティのいずれかがメール配信エージェントとして使用された場合、リモートの攻撃者が、この欠陥を利用して、特別に細工されたメールメッセージを被害者に送信することにより、ターゲットユーザーとして任意のコードを実行する可能性があります。
(CVE-2008-5005)

imap のユーザーは、バックポートされたパッチが含まれるこれらの更新済みパッケージへアップグレードし、この問題を解決する必要があります。

imap に同梱されている dmail および tmail メール配信ユーティリティで、バッファオーバーフローの欠陥が発見されました。このユーティリティのいずれかがメール配信エージェントとして使用された場合、リモートの攻撃者が、この欠陥を利用して、特別に細工されたメールメッセージを被害者に送信することにより、ターゲットユーザーとして任意のコードを実行する可能性があります。
（CVE-2008-5005）

Addresses a security vulnerability in tmail and dmail:
http://mailman2.u.washington.edu/pipermail/imap-uw/2008-October/002267 .html

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Security vulnerabilities has been identified and fixed in University of Washington IMAP Toolkit :

Multiple stack-based buffer overflows in (1) University of Washington IMAP Toolkit 2002 through 2007c, (2) University of Washington Alpine 2.00 and earlier, and (3) Panda IMAP allow (a) local users to gain privileges by specifying a long folder extension argument on the command line to the tmail or dmail program; and (b) remote attackers to execute arbitrary code by sending e-mail to a destination mailbox name composed of a username and '+' character followed by a long string, processed by the tmail or possibly dmail program (CVE-2008-5005).

smtp.c in the c-client library in University of Washington IMAP Toolkit 2007b allows remote SMTP servers to cause a denial of service (NULL pointer dereference and application crash) by responding to the QUIT command with a close of the TCP connection instead of the expected 221 response code (CVE-2008-5006).

Off-by-one error in the rfc822_output_char function in the RFC822BUFFER routines in the University of Washington (UW) c-client library, as used by the UW IMAP toolkit before imap-2007e and other applications, allows context-dependent attackers to cause a denial of service (crash) via an e-mail message that triggers a buffer overflow (CVE-2008-5514).

The updated packages have been patched to prevent this. Note that the software was renamed to c-client starting from Mandriva Linux 2009.0 and only provides the shared c-client library for the imap functions in PHP.

Update :

Packages for 2008.0 are provided for Corporate Desktop 2008.0 customers.

来自 Red Hat 安全公告 2009:0275：

更新后的 imap 程序包修复了一个安全问题，现在可用于 Red Hat Enterprise Linux 3。

Red Hat 安全响应团队将此更新评级为具有中等安全影响。

imap 程序包提供了适用于 IMAP（Internet 消息访问协议）和 POP（邮局协议）邮件访问协议的服务器后台程序。

在 imap 随附的 dmail 和 tmail 邮件投递实用工具中发现缓冲区溢出缺陷。如果其中任一实用工具被邮件投递代理所使用，远程攻击者可能利用此缺陷通过向受害者发送特别构建的邮件，从而以目标用户的身份运行任意代码。
(CVE-2008-5005)

imap 用户应升级这些更新后的程序包，其中包含用于解决该问题的向后移植的修补程序。

來自 Red Hat 安全性公告 2009:0275：

現已提供適用於 Red Hat Enterprise Linux 3 的更新版 imap 套件，可修正一個安全性問題。

Red Hat 安全性回應團隊已將此更新評等為具有中等安全性影響。

imap 套件提供適用於 IMAP (網際網路訊息存取通訊協定) 和 POP (郵局通訊協定) 郵件存取通訊協定的伺服器程序。

在 imap 隨附的 dmail 與 tmail 郵件遞送公用程式中發現一個緩衝區溢位瑕疵。如果使用這裡的任一公用程式作為郵件遞送代理程式，遠端攻擊者可能利用此瑕疵，透過傳送特製郵件訊息給受害者的方式，以目標使用者的身分執行任意程式碼。
(CVE-2008-5005)

imap 使用者應升級至這些更新版套件，其中包含可解決此問題的反向移植修補程式。

在 imap 隨附的 dmail 與 tmail 郵件遞送公用程式中發現一個緩衝區溢位瑕疵。如果使用這裡的任一公用程式作為郵件遞送代理程式，遠端攻擊者可能利用此瑕疵，透過傳送特製郵件訊息給受害者的方式，以目標使用者的身分執行任意程式碼。
(CVE-2008-5005)

在 imap 随附的 dmail 和 tmail 邮件投递实用工具中发现缓冲区溢出缺陷。如果其中任一实用工具被邮件投递代理所使用，远程攻击者可能利用此缺陷通过向受害者发送特别构建的邮件，从而以目标用户的身份运行任意代码。
(CVE-2008-5005)

A buffer overflow flaw was discovered in the dmail and tmail mail delivery utilities shipped with imap. If either of these utilities were used as a mail delivery agent, a remote attacker could potentially use this flaw to run arbitrary code as the targeted user by sending a specially crafted mail message to the victim.
(CVE-2008-5005)

Updated imap packages to fix a security issue are now available for Red Hat Enterprise Linux 3.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

The imap package provides server daemons for both the IMAP (Internet Message Access Protocol) and POP (Post Office Protocol) mail access protocols.

A buffer overflow flaw was discovered in the dmail and tmail mail delivery utilities shipped with imap. If either of these utilities were used as a mail delivery agent, a remote attacker could potentially use this flaw to run arbitrary code as the targeted user by sending a specially crafted mail message to the victim.
(CVE-2008-5005)

Users of imap should upgrade to these updated packages, which contain a backported patch to resolve this issue.

From Red Hat Security Advisory 2009:0275 :

Updated imap packages to fix a security issue are now available for Red Hat Enterprise Linux 3.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

The imap package provides server daemons for both the IMAP (Internet Message Access Protocol) and POP (Post Office Protocol) mail access protocols.

A buffer overflow flaw was discovered in the dmail and tmail mail delivery utilities shipped with imap. If either of these utilities were used as a mail delivery agent, a remote attacker could potentially use this flaw to run arbitrary code as the targeted user by sending a specially crafted mail message to the victim.
(CVE-2008-5005)

Users of imap should upgrade to these updated packages, which contain a backported patch to resolve this issue.

The remote host is affected by the vulnerability described in GLSA-200911-03 (UW IMAP toolkit: Multiple vulnerabilities)

    Multiple vulnerabilities were found in the UW IMAP toolkit:
    Aron Andersson and Jan Sahlin of Bitsec reported boundary errors in     the 'tmail' and 'dmail' utilities when processing overly long mailbox     names, leading to stack-based buffer overflows (CVE-2008-5005).
    An error in smtp.c in the c-client library was found, leading to a     NULL pointer dereference vulnerability (CVE-2008-5006).
    Ludwig     Nussel reported an off-by-one error in the rfc822_output_char()     function in the RFC822BUFFER routines in the c-client library, as used     by the UW IMAP toolkit (CVE-2008-5514).
  Impact :

    A remote attacker could send an e-mail to a destination mailbox name     composed of a username and '+' character followed by a long string,     possibly leading to the execution of arbitrary code. A local attacker     could gain privileges by specifying a long folder extension argument to     the tmail or dmail program. Furthermore, a remote attacker could send a     specially crafted mail message to the UW IMAP toolkit or another daemon     using the c-client library, leading to a Denial of Service. A remote     SMTP server could respond to the QUIT command with a close of the TCP     connection instead of the expected 221 response code, possibly leading     to a Denial of Service.
  Workaround :

    There is no known workaround at this time.

There is a flaw in the remote UW-IMAP server that allows a local user to execute arbitrary code on the server.  The flaw is in the way that UW-IMAP handles malformed data sent to the 'tmail' and 'dmail' local executables.  An attacker exploiting this flaw would need local access as well as the ability to execute the aforementioned binaries.  Successful exploiation would result in the attacker executing arbitrary code as the 'root' user.

ID	名稱	產品	系列	已發布	已更新	嚴重性
35091	Debian DSA-1685-1 : uw-imap - buffer overflows, NULL pointer dereference	Nessus	Debian Local Security Checks	2008/12/15	2021/1/4	critical
67805	Oracle Linux 3：imap（ELSA-2009-0275）	Nessus	Oracle Linux Local Security Checks	2013/7/12	2021/1/14	critical
60537	Scientific Linux セキュリティ更新：SL3.x i386/x86_64 の imap	Nessus	Scientific Linux Local Security Checks	2012/8/1	2021/1/14	critical
34707	Fedora 9 : uw-imap-2007d-1.fc9 (2008-9396)	Nessus	Fedora Local Security Checks	2008/11/6	2021/1/11	critical
39573	Mandriva Linux Security Advisory : imap (MDVSA-2009:146-1)	Nessus	Mandriva Local Security Checks	2009/6/30	2021/1/6	critical
67805	Oracle Linux 3：imap (ELSA-2009-0275)	Nessus	Oracle Linux Local Security Checks	2013/7/12	2021/1/14	critical
67805	Oracle Linux 3 : imap (ELSA-2009-0275)	Nessus	Oracle Linux Local Security Checks	2013/7/12	2021/1/14	critical
60537	Scientific Linux 安全性更新：SL3.x i386/x86_64 上的 imap	Nessus	Scientific Linux Local Security Checks	2012/8/1	2021/1/14	critical
60537	Scientific Linux 安全更新：SL3.x i386/x86_64 中的 imap	Nessus	Scientific Linux Local Security Checks	2012/8/1	2021/1/14	critical
60537	Scientific Linux Security Update : imap on SL3.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	2012/8/1	2021/1/14	critical
35721	RHEL 3 : imap (RHSA-2009:0275)	Nessus	Red Hat Local Security Checks	2009/2/20	2021/1/14	critical
34706	Fedora 8 : uw-imap-2007d-1.fc8 (2008-9383)	Nessus	Fedora Local Security Checks	2008/11/6	2021/1/11	critical
35718	CentOS 3 : imap (CESA-2009:0275)	Nessus	CentOS Local Security Checks	2009/2/20	2021/1/4	critical
67805	Oracle Linux 3 : imap (ELSA-2009-0275)	Nessus	Oracle Linux Local Security Checks	2013/7/12	2021/1/14	critical
42913	GLSA-200911-03 : UW IMAP toolkit: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	2009/11/30	2021/1/6	critical
4730	UW-IMAP < 2007d.404 Multiple Utility Mailbox Name Overflow	Nessus Network Monitor	IMAP Servers	2008/11/3	2019/3/6	high

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