Vulnerabilities > CVE-2020-3811 - Incorrect Authorization vulnerability in multiple products

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
PARTIAL
Availability impact
NONE
network
low complexity
netqmail
debian
canonical
CWE-863
nessus

Summary

qmail-verify as used in netqmail 1.06 is prone to a mail-address verification bypass vulnerability.

Vulnerable Configurations

Part Description Count
Application
Netqmail
1
OS
Debian
2
OS
Canonical
1

Common Weakness Enumeration (CWE)

Nessus

  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-2234.NASL
    descriptionThere were several CVE bugs reported against src:netqmail. CVE-2005-1513 Integer overflow in the stralloc_readyplus function in qmail, when running on 64 bit platforms with a large amount of virtual memory, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a large SMTP request. CVE-2005-1514 commands.c in qmail, when running on 64 bit platforms with a large amount of virtual memory, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long SMTP command without a space character, which causes an array to be referenced with a negative index. CVE-2005-1515 Integer signedness error in the qmail_put and substdio_put functions in qmail, when running on 64 bit platforms with a large amount of virtual memory, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a large number of SMTP RCPT TO commands. CVE-2020-3811 qmail-verify as used in netqmail 1.06 is prone to a mail-address verification bypass vulnerability. CVE-2020-3812 qmail-verify as used in netqmail 1.06 is prone to an information disclosure vulnerability. A local attacker can test for the existence of files and directories anywhere in the filesystem because qmail-verify runs as root and tests for the existence of files in the attacker
    last seen2020-06-10
    modified2020-06-05
    plugin id137154
    published2020-06-05
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/137154
    titleDebian DLA-2234-1 : netqmail security update
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Debian Security Advisory DLA-2234-1. The text
    # itself is copyright (C) Software in the Public Interest, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(137154);
      script_version("1.2");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/09");
    
      script_cve_id("CVE-2005-1513", "CVE-2005-1514", "CVE-2005-1515", "CVE-2020-3811", "CVE-2020-3812");
    
      script_name(english:"Debian DLA-2234-1 : netqmail security update");
      script_summary(english:"Checks dpkg output for the updated packages.");
    
      script_set_attribute(
        attribute:"synopsis",
        value:"The remote Debian host is missing a security update."
      );
      script_set_attribute(
        attribute:"description",
        value:
    "There were several CVE bugs reported against src:netqmail.
    
    CVE-2005-1513
    
    Integer overflow in the stralloc_readyplus function in qmail, when
    running on 64 bit platforms with a large amount of virtual memory,
    allows remote attackers to cause a denial of service and possibly
    execute arbitrary code via a large SMTP request.
    
    CVE-2005-1514
    
    commands.c in qmail, when running on 64 bit platforms with a large
    amount of virtual memory, allows remote attackers to cause a denial of
    service and possibly execute arbitrary code via a long SMTP command
    without a space character, which causes an array to be referenced with
    a negative index.
    
    CVE-2005-1515
    
    Integer signedness error in the qmail_put and substdio_put functions
    in qmail, when running on 64 bit platforms with a large amount of
    virtual memory, allows remote attackers to cause a denial of service
    and possibly execute arbitrary code via a large number of SMTP RCPT TO
    commands.
    
    CVE-2020-3811
    
    qmail-verify as used in netqmail 1.06 is prone to a mail-address
    verification bypass vulnerability.
    
    CVE-2020-3812
    
    qmail-verify as used in netqmail 1.06 is prone to an information
    disclosure vulnerability. A local attacker can test for the existence
    of files and directories anywhere in the filesystem because
    qmail-verify runs as root and tests for the existence of files in the
    attacker's home directory, without dropping its privileges first.
    
    For Debian 8 'Jessie', these problems have been fixed in version
    1.06-6.2~deb8u1.
    
    We recommend that you upgrade your netqmail packages.
    
    NOTE: Tenable Network Security has extracted the preceding description
    block directly from the DLA security advisory. Tenable has attempted
    to automatically clean and format it as much as possible without
    introducing additional issues."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://lists.debian.org/debian-lts-announce/2020/06/msg00002.html"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://packages.debian.org/source/jessie/netqmail"
      );
      script_set_attribute(
        attribute:"solution",
        value:"Upgrade the affected qmail, and qmail-uids-gids packages."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
      script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-3811");
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qmail");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:qmail-uids-gids");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2005/05/11");
      script_set_attribute(attribute:"patch_publication_date", value:"2020/06/04");
      script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/05");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Debian Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("debian_package.inc");
    
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
    if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    flag = 0;
    if (deb_check(release:"8.0", prefix:"qmail", reference:"1.06-6.2~deb8u1")) flag++;
    if (deb_check(release:"8.0", prefix:"qmail-uids-gids", reference:"1.06-6.2~deb8u1")) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
      else security_warning(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-4692.NASL
    descriptionGeorgi Guninski and the Qualys Research Labs discovered multiple vulnerabilities in qmail (shipped in Debian as netqmail with additional patches) which could result in the execution of arbitrary code, bypass of mail address verification and a local information leak whether a file exists or not.
    last seen2020-06-06
    modified2020-05-26
    plugin id136837
    published2020-05-26
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/136837
    titleDebian DSA-4692-1 : netqmail - security update
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Debian Security Advisory DSA-4692. The text 
    # itself is copyright (C) Software in the Public Interest, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(136837);
      script_version("1.5");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/05");
    
      script_cve_id("CVE-2005-1513", "CVE-2005-1514", "CVE-2005-1515", "CVE-2020-3811", "CVE-2020-3812");
      script_xref(name:"DSA", value:"4692");
    
      script_name(english:"Debian DSA-4692-1 : netqmail - security update");
      script_summary(english:"Checks dpkg output for the updated package");
    
      script_set_attribute(
        attribute:"synopsis",
        value:"The remote Debian host is missing a security-related update."
      );
      script_set_attribute(
        attribute:"description",
        value:
    "Georgi Guninski and the Qualys Research Labs discovered multiple
    vulnerabilities in qmail (shipped in Debian as netqmail with
    additional patches) which could result in the execution of arbitrary
    code, bypass of mail address verification and a local information leak
    whether a file exists or not."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=961060"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security-tracker.debian.org/tracker/source-package/netqmail"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://packages.debian.org/source/stretch/netqmail"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://packages.debian.org/source/buster/netqmail"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.debian.org/security/2020/dsa-4692"
      );
      script_set_attribute(
        attribute:"solution",
        value:
    "Upgrade the netqmail packages.
    
    For the oldstable distribution (stretch), these problems have been
    fixed in version 1.06-6.2~deb9u1.
    
    For the stable distribution (buster), these problems have been fixed
    in version 1.06-6.2~deb10u1."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
      script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
      script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-3811");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:netqmail");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2005/05/11");
      script_set_attribute(attribute:"patch_publication_date", value:"2020/05/24");
      script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/26");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Debian Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("debian_package.inc");
    
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
    if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    flag = 0;
    if (deb_check(release:"10.0", prefix:"qmail", reference:"1.06-6.2~deb10u1")) flag++;
    if (deb_check(release:"10.0", prefix:"qmail-uids-gids", reference:"1.06-6.2~deb10u1")) flag++;
    if (deb_check(release:"9.0", prefix:"qmail", reference:"1.06-6.2~deb9u1")) flag++;
    if (deb_check(release:"9.0", prefix:"qmail-uids-gids", reference:"1.06-6.2~deb9u1")) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
      else security_warning(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/157805/QSA-qmail.txt
idPACKETSTORM:157805
last seen2020-05-26
published2020-05-21
reporterAlexander Peslyak
sourcehttps://packetstormsecurity.com/files/157805/Qualys-Security-Advisory-Qmail-Remote-Code-Execution.html
titleQualys Security Advisory - Qmail Remote Code Execution