Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH.

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2022:0198 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2021-36386:
    report_vbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf     va_list argument, which might allow mail servers to cause a denial of service or possibly have unspecified     other impact via long error messages. NOTE: it is unclear whether use of Fetchmail on any realistic     platform results in an impact beyond an inconvenience to the client user.

    CVE-2021-39272:
    Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a     certain situation with IMAP and PREAUTH.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a     certain situation with IMAP and PREAUTH. (CVE-2021-39272)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote CentOS Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the fetchmail-6.4.24-1.el9 build changelog.

  - report_vbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf     va_list argument, which might allow mail servers to cause a denial of service or possibly have unspecified     other impact via long error messages. NOTE: it is unclear whether use of Fetchmail on any realistic     platform results in an impact beyond an inconvenience to the client user. (CVE-2021-36386)

  - Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a     certain situation with IMAP and PREAUTH. (CVE-2021-39272)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2022:1964 advisory.

  - report_vbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf     va_list argument, which might allow mail servers to cause a denial of service or possibly have unspecified     other impact via long error messages. NOTE: it is unclear whether use of Fetchmail on any realistic     platform results in an impact beyond an inconvenience to the client user. (CVE-2021-36386)

  - Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a     certain situation with IMAP and PREAUTH. (CVE-2021-39272)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote host is affected by the vulnerability described in GLSA-202209-14 (Fetchmail: Multiple Vulnerabilities)

  - report_vbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf     va_list argument, which might allow mail servers to cause a denial of service or possibly have unspecified     other impact via long error messages. NOTE: it is unclear whether use of Fetchmail on any realistic     platform results in an impact beyond an inconvenience to the client user. (CVE-2021-36386)

  - Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a     certain situation with IMAP and PREAUTH. (CVE-2021-39272)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2022-1964 advisory.

    [6.4.24-1]
    - Update to fetchmail-6.4.24 (fixes CVE-2021-36386 and CVE-2021-39272)       Resolves: #1999275, #2002698

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ALSA-2022:1964 advisory.

  - report_vbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf     va_list argument, which might allow mail servers to cause a denial of service or possibly have unspecified     other impact via long error messages. NOTE: it is unclear whether use of Fetchmail on any realistic     platform results in an impact beyond an inconvenience to the client user. (CVE-2021-36386)

  - Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a     certain situation with IMAP and PREAUTH. (CVE-2021-39272)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2022:1964 advisory.

    Fetchmail is a remote mail retrieval and forwarding utility intended for use over on-demand TCP/IP links,     like SLIP or PPP connections. Fetchmail supports every remote-mail protocol currently in use on the     Internet (POP2, POP3, RPOP, APOP, KPOP, all IMAPs, ESMTP ETRN, IPv6, and IPSEC) for retrieval. Then     Fetchmail forwards the mail through SMTP so the user can read it through their favorite mail client.

    Security Fix(es):

    * fetchmail: DoS or information disclosure when logging long messages (CVE-2021-36386)

    * fetchmail: STARTTLS session encryption bypassing (CVE-2021-39272)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the CESA-2022:1964 advisory.

  - fetchmail: DoS or information disclosure when logging long messages (CVE-2021-36386)

  - fetchmail: STARTTLS session encryption bypassing (CVE-2021-39272)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:1591-1 advisory.

  - report_vbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf     va_list argument, which might allow mail servers to cause a denial of service or possibly have unspecified     other impact via long error messages. NOTE: it is unclear whether use of Fetchmail on any realistic     platform results in an impact beyond an inconvenience to the client user. (CVE-2021-36386)

  - Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a     certain situation with IMAP and PREAUTH. (CVE-2021-39272)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:4018-1 advisory.

  - report_vbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf     va_list argument, which might allow mail servers to cause a denial of service or possibly have unspecified     other impact via long error messages. NOTE: it is unclear whether use of Fetchmail on any realistic     platform results in an impact beyond an inconvenience to the client user. (CVE-2021-36386)

  - Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a     certain situation with IMAP and PREAUTH. (CVE-2021-39272)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:4018-1 advisory.

  - report_vbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf     va_list argument, which might allow mail servers to cause a denial of service or possibly have unspecified     other impact via long error messages. NOTE: it is unclear whether use of Fetchmail on any realistic     platform results in an impact beyond an inconvenience to the client user. (CVE-2021-36386)

  - Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a     certain situation with IMAP and PREAUTH. (CVE-2021-39272)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by a vulnerability as referenced in the openSUSE-SU-2021:1416-1 advisory.

  - Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a     certain situation with IMAP and PREAUTH. (CVE-2021-39272)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2021:3492-1 advisory.

  - Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a     certain situation with IMAP and PREAUTH. (CVE-2021-39272)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLES15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2021:3493-1 advisory.

  - Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a     certain situation with IMAP and PREAUTH. (CVE-2021-39272)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by a vulnerability as referenced in the openSUSE-SU-2021:3493-1 advisory.

  - Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a     certain situation with IMAP and PREAUTH. (CVE-2021-39272)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Problem :

In certain circumstances, fetchmail 6.4.21 and older would not encrypt the session using STARTTLS/STLS, and might not have cleared session state across the TLS negotiation.

ID	Name	Product	Family	Severity
235980	Alibaba Cloud Linux 3 : 0198: fetchmail (ALINUX3-SA-2022:0198)	Nessus	Alibaba Cloud Linux Local Security Checks	medium
224057	Linux Distros Unpatched Vulnerability : CVE-2021-39272	Nessus	Misc.	medium
191318	CentOS 9 : fetchmail-6.4.24-1.el9	Nessus	CentOS Local Security Checks	medium
184882	Rocky Linux 8 : fetchmail (RLSA-2022:1964)	Nessus	Rocky Linux Local Security Checks	medium
165440	GLSA-202209-14 : Fetchmail: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	medium
161312	Oracle Linux 8 : fetchmail (ELSA-2022-1964)	Nessus	Oracle Linux Local Security Checks	medium
161123	AlmaLinux 8 : fetchmail (ALSA-2022:1964)	Nessus	Alma Linux Local Security Checks	medium
161006	RHEL 8 : fetchmail (RHSA-2022:1964)	Nessus	Red Hat Local Security Checks	medium
160955	CentOS 8 : fetchmail (CESA-2022:1964)	Nessus	CentOS Local Security Checks	medium
156179	openSUSE 15 Security Update : fetchmail (openSUSE-SU-2021:1591-1)	Nessus	SuSE Local Security Checks	medium
156154	openSUSE 15 Security Update : fetchmail (openSUSE-SU-2021:4018-1)	Nessus	SuSE Local Security Checks	medium
156090	SUSE SLED15 / SLES15 Security Update : fetchmail (SUSE-SU-2021:4018-1)	Nessus	SuSE Local Security Checks	medium
154763	openSUSE 15 Security Update : fetchmail (openSUSE-SU-2021:1416-1)	Nessus	SuSE Local Security Checks	medium
154317	SUSE SLES12 Security Update : fetchmail (SUSE-SU-2021:3492-1)	Nessus	SuSE Local Security Checks	medium
154300	SUSE SLED15 / SLES15 Security Update : fetchmail (SUSE-SU-2021:3493-1)	Nessus	SuSE Local Security Checks	medium
154280	openSUSE 15 Security Update : fetchmail (openSUSE-SU-2021:3493-1)	Nessus	SuSE Local Security Checks	medium
152901	FreeBSD : fetchmail -- STARTTLS bypass vulnerabilities (1d6410e8-06c1-11ec-a35d-03ca114d16d6)	Nessus	FreeBSD Local Security Checks	medium

Detections

Analytics

CVE-2021-39272

medium

Tenable Plugins

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium