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.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

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

  - 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)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

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

  - 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)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

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.

  - 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 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: 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 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.

According to the versions of the fetchmail package installed, the EulerOS installation on the remote host is affected by the following 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)

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

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-2021:1183-1 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)

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-2021:2791-1 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)

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 a vulnerability as referenced in the SUSE-SU-2021:2791-1 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)

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-2021:2771-1 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)

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

Matthias Andree reports :

When a log message exceeds c. 2 kByte in size, for instance, with very long header contents, and depending on verbosity option, fetchmail can crash or misreport each first log message that requires a buffer reallocation.

ID	Name	Product	Family	Severity
196089	RHEL 7 : fetchmail (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	medium
196002	RHEL 6 : fetchmail (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	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
158274	EulerOS 2.0 SP3 : fetchmail (EulerOS-SA-2022-1162)	Nessus	Huawei Local Security Checks	high
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
155139	EulerOS 2.0 SP5 : fetchmail (EulerOS-SA-2021-2658)	Nessus	Huawei Local Security Checks	high
154786	EulerOS 2.0 SP8 : fetchmail (EulerOS-SA-2021-2629)	Nessus	Huawei Local Security Checks	high
152758	openSUSE 15 Security Update : fetchmail (openSUSE-SU-2021:1183-1)	Nessus	SuSE Local Security Checks	high
152721	openSUSE 15 Security Update : fetchmail (openSUSE-SU-2021:2791-1)	Nessus	SuSE Local Security Checks	high
152715	SUSE SLED15 / SLES15 Security Update : fetchmail (SUSE-SU-2021:2791-1)	Nessus	SuSE Local Security Checks	high
152677	SUSE SLES12 Security Update : fetchmail (SUSE-SU-2021:2771-1)	Nessus	SuSE Local Security Checks	high
152150	FreeBSD : fetchmail -- 6.4.19 and older denial of service or information disclosure (cbfd1874-efea-11eb-8fe9-036bd763ff35)	Nessus	FreeBSD Local Security Checks	high

Detections

Analytics

CVE-2021-36386

high

Tenable Plugins

medium

medium

medium

medium

medium

medium

medium

medium

medium

high

medium

medium

medium

high

high

high

high

high

high

high