ID CVE-2017-3144
Summary A vulnerability stemming from failure to properly clean up closed OMAPI connections can lead to exhaustion of the pool of socket descriptors available to the DHCP server. Affects ISC DHCP 4.1.0 to 4.1-ESV-R15, 4.2.0 to 4.2.8, 4.3.0 to 4.3.6. Older versions may also be affected but are well beyond their end-of-life (EOL). Releases prior to 4.1.0 have not been tested.
References
Vulnerable Configurations
  • cpe:2.3:a:isc:dhcp:4.1-esv:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r10:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r10:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r10_b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r10_b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r10_rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r10_rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r11:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r11:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r11_b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r11_b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc2:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc2:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r12:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r12:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r12_b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r12_b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r12_p1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r12_p1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r13:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r13:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r13_b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r13_b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r14:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r14:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r14_b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r14_b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r15:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r15:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r2:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r2:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r3:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r3:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r3_b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r3_b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r4:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r4:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r5:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r5:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r5_b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r5_b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc2:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc2:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r6:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r6:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r7:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r7:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r8:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r8:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r8_b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r8_b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r8_rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r8_rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r9:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r9:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r9_b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r9_b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1-esv:r9_rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1-esv:r9_rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.0:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.0:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.0:a1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.0:a1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.0:a2:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.0:a2:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.0:b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.0:b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.0:b2:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.0:b2:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.0:p1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.0:p1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.0:p2:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.0:p2:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.1:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.1:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.1:b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.1:b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.1:p1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.1:p1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.1:rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.1:rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.2:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.2:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.2:b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.2:b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.2:rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.2:rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.3:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.3:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.3:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.3:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.3:p1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.3:p1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.3:p2:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.3:p2:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.4:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.4:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.4:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.4:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.4:b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.4:b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.4:p1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.4:p1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.4:p2:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.4:p2:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.4:rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.4:rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.4:rc2:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.4:rc2:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.5:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.5:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.5:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.5:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.5:b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.5:b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.5:p1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.5:p1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.5:rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.5:rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.6:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.6:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.6:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.6:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.6:b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.6:b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.6:rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.6:rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.7:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.7:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.7:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.7:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.7:b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.7:b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.7:rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.7:rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.8:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.8:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.8:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.8:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.8:b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.8:b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.8:rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.8:rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.2.8:rc2:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.2.8:rc2:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.0:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.0:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.0:a1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.0:a1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.0:b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.0:b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.1:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.1:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.1:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.1:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.1:b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.1:b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.1:rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.1:rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.2:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.2:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.2:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.2:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.2:b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.2:b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.2:rc1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.2:rc1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.2:rc2:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.2:rc2:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.3:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.3:*:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.3:-:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.3:-:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.3:b1:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.3:b1:*:*:*:*:*:*
  • cpe:2.3:a:isc:dhcp:4.3.5:*:*:*:*:*:*:*
    cpe:2.3:a:isc:dhcp:4.3.5:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
    cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
    cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
    cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
    cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
    cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVSS
Base: 5.0 (as of 09-10-2019 - 23:27)
Impact:
Exploitability:
CWE CWE-400
CAPEC
  • XML Ping of the Death
    An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
  • XML Entity Expansion
    An attacker submits an XML document to a target application where the XML document uses nested entity expansion to produce an excessively large output XML. XML allows the definition of macro-like structures that can be used to simplify the creation of complex structures. However, this capability can be abused to create excessive demands on a processor's CPU and memory. A small number of nested expansions can result in an exponential growth in demands on memory.
  • Regular Expression Exponential Blowup
    An adversary may execute an attack on a program that uses a poor Regular Expression(Regex) implementation by choosing input that results in an extreme situation for the Regex. A typical extreme situation operates at exponential time compared to the input size. This is due to most implementations using a Nondeterministic Finite Automaton(NFA) state machine to be built by the Regex algorithm since NFA allows backtracking and thus more complex regular expressions. The algorithm builds a finite state machine and based on the input transitions through all the states until the end of the input is reached. NFA engines may evaluate each character in the input string multiple times during the backtracking. The algorithm tries each path through the NFA one by one until a match is found; the malicious input is crafted so every path is tried which results in a failure. Exploitation of the Regex results in programs hanging or taking a very long time to complete. These attacks may target various layers of the Internet due to regular expressions being used in validation.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
NONE NONE PARTIAL
cvss-vector via4 AV:N/AC:L/Au:N/C:N/I:N/A:P
redhat via4
advisories
bugzilla
id 1522918
title CVE-2017-3144 dhcp: omapi code doesn't free socket descriptors when empty message is received allowing denial-of-service
oval
AND
  • OR
    • comment Red Hat Enterprise Linux 7 Client is installed
      oval oval:com.redhat.rhba:tst:20150364001
    • comment Red Hat Enterprise Linux 7 Server is installed
      oval oval:com.redhat.rhba:tst:20150364002
    • comment Red Hat Enterprise Linux 7 Workstation is installed
      oval oval:com.redhat.rhba:tst:20150364003
    • comment Red Hat Enterprise Linux 7 ComputeNode is installed
      oval oval:com.redhat.rhba:tst:20150364004
  • OR
    • AND
      • comment dhclient is earlier than 12:4.2.5-58.el7_4.1
        oval oval:com.redhat.rhsa:tst:20180158011
      • comment dhclient is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20100923008
    • AND
      • comment dhcp is earlier than 12:4.2.5-58.el7_4.1
        oval oval:com.redhat.rhsa:tst:20180158009
      • comment dhcp is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20100923006
    • AND
      • comment dhcp-common is earlier than 12:4.2.5-58.el7_4.1
        oval oval:com.redhat.rhsa:tst:20180158007
      • comment dhcp-common is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20111819010
    • AND
      • comment dhcp-devel is earlier than 12:4.2.5-58.el7_4.1
        oval oval:com.redhat.rhsa:tst:20180158005
      • comment dhcp-devel is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20100923010
    • AND
      • comment dhcp-libs is earlier than 12:4.2.5-58.el7_4.1
        oval oval:com.redhat.rhsa:tst:20180158013
      • comment dhcp-libs is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20162590008
rhsa
id RHSA-2018:0158
released 2018-01-25
severity Moderate
title RHSA-2018:0158: dhcp security update (Moderate)
rpms
  • dhclient-12:4.2.5-58.el7_4.1
  • dhcp-12:4.2.5-58.el7_4.1
  • dhcp-common-12:4.2.5-58.el7_4.1
  • dhcp-devel-12:4.2.5-58.el7_4.1
  • dhcp-libs-12:4.2.5-58.el7_4.1
refmap via4
bid 102726
confirm https://kb.isc.org/docs/aa-01541
debian DSA-4133
sectrack 1040194
ubuntu USN-3586-1
Last major update 09-10-2019 - 23:27
Published 16-01-2019 - 20:29
Last modified 09-01-2020 - 21:07
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