CVE Feed

    Dashboard / CVE / CVE-2017-16943

    CVE-2017-16943

    The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via vectors involving BDAT commands.

    Published:Nov 23, 2017
    Last Modified:Apr 20, 2025
    EPS:Nov 25, 2017
    EPSS Score:0.78882
    CVSS Score:9.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Exim
    Product
    Exim

    Exploits

    https://bugs.exim.org/show_bug.cgi?id=2199https://github.com/LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944https://bugs.exim.org/show_bug.cgi?id=2199https://github.com/LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944https://github.com/beraphin/CVE-2017-16943

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-77118 (CVSS 8.4) — A heap out-of-bounds write exists in the Photo CD (PCD) decoder of GraphicsMagick. In DecodeImage() (coders/pc…
    CVE-2026-56968 (CVSS 3.7) — GNU SASL before 2.2.4 lacks sanitization of a short challenge in _gsasl_ntlm_client_step in the NTLM client, w…
    CVE-2026-49975 (CVSS 7.5) — Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of …
    CVE-2026-9256 (CVSS 9.2) — NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerabilit…
    CVE-2026-31431 (CVSS 7.8) — In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating …
    CVE-2026-34757 (CVSS 5.1) — LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network …
    CVE-2026-4775 (CVSS 7.8) — A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerabili…
    CVE-2025-63261 (CVSS 7.8) — AWStats 8.0 is vulnerable to Command Injection via the open function…
    CVE-2026-3497 (CVSS 6.9) — Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects …
    CVE-2026-1940 (CVSS 5.1) — An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The p…

    References

    http://openwall.com/lists/oss-security/2017/11/25/1
    http://openwall.com/lists/oss-security/2017/11/25/2
    http://openwall.com/lists/oss-security/2017/11/25/3
    http://www.openwall.com/lists/oss-security/2021/05/04/7
    http://www.securitytracker.com/id/1039872
    https://bugs.exim.org/show_bug.cgi?id=2199
    https://git.exim.org/exim.git/commit/4090d62a4b25782129cc1643596dc2f6e8f63bde
    https://git.exim.org/exim.git/commitdiff/4e6ae6235c68de243b1c2419027472d7659aa2b4
    https://github.com/LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944
    https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html
    https://www.debian.org/security/2017/dsa-4053
    http://openwall.com/lists/oss-security/2017/11/25/1
    http://openwall.com/lists/oss-security/2017/11/25/2
    http://openwall.com/lists/oss-security/2017/11/25/3
    http://www.openwall.com/lists/oss-security/2021/05/04/7
    http://www.securitytracker.com/id/1039872
    https://bugs.exim.org/show_bug.cgi?id=2199
    https://git.exim.org/exim.git/commit/4090d62a4b25782129cc1643596dc2f6e8f63bde
    https://git.exim.org/exim.git/commitdiff/4e6ae6235c68de243b1c2419027472d7659aa2b4
    https://github.com/LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944
    https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html
    https://www.debian.org/security/2017/dsa-4053

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High