ID CVE-2019-0053
Summary Insufficient validation of environment variables in the telnet client supplied in Junos OS can lead to stack-based buffer overflows, which can be exploited to bypass veriexec restrictions on Junos OS. A stack-based overflow is present in the handling of environment variables when connecting via the telnet client to remote telnet servers. This issue only affects the telnet client ? accessible from the CLI or shell ? in Junos OS. Inbound telnet services are not affected by this issue. This issue affects: Juniper Networks Junos OS: 12.3 versions prior to 12.3R12-S13; 12.3X48 versions prior to 12.3X48-D80; 14.1X53 versions prior to 14.1X53-D130, 14.1X53-D49; 15.1 versions prior to 15.1F6-S12, 15.1R7-S4; 15.1X49 versions prior to 15.1X49-D170; 15.1X53 versions prior to 15.1X53-D237, 15.1X53-D496, 15.1X53-D591, 15.1X53-D69; 16.1 versions prior to 16.1R3-S11, 16.1R7-S4; 16.2 versions prior to 16.2R2-S9; 17.1 versions prior to 17.1R3; 17.2 versions prior to 17.2R1-S8, 17.2R2-S7, 17.2R3-S1; 17.3 versions prior to 17.3R3-S4; 17.4 versions prior to 17.4R1-S6, 17.4R2-S3, 17.4R3; 18.1 versions prior to 18.1R2-S4, 18.1R3-S3; 18.2 versions prior to 18.2R1-S5, 18.2R2-S2, 18.2R3; 18.2X75 versions prior to 18.2X75-D40; 18.3 versions prior to 18.3R1-S3, 18.3R2; 18.4 versions prior to 18.4R1-S2, 18.4R2.
References
Vulnerable Configurations
  • Juniper JUNOS 12.3
    cpe:2.3:o:juniper:junos:12.3
  • Juniper Junos 12.3 R1
    cpe:2.3:o:juniper:junos:12.3:r1
  • Juniper Junos 12.3 R11
    cpe:2.3:o:juniper:junos:12.3:r11
  • Juniper JunOS 12.3 R12
    cpe:2.3:o:juniper:junos:12.3:r12
  • Juniper JunOS 12.3 R13
    cpe:2.3:o:juniper:junos:12.3:r13
  • Juniper Junos 12.3 R2
    cpe:2.3:o:juniper:junos:12.3:r2
  • Juniper Junos 12.3 R3
    cpe:2.3:o:juniper:junos:12.3:r3
  • Juniper Junos 12.3 R4
    cpe:2.3:o:juniper:junos:12.3:r4
  • Juniper Junos 12.3 R5
    cpe:2.3:o:juniper:junos:12.3:r5
  • Juniper Junos 12.3 R6
    cpe:2.3:o:juniper:junos:12.3:r6
  • Juniper JUNOS 12.3R7
    cpe:2.3:o:juniper:junos:12.3:r7
  • Juniper Junos 12.3 R8
    cpe:2.3:o:juniper:junos:12.3:r8
  • Juniper JunOS 12.3 R9
    cpe:2.3:o:juniper:junos:12.3:r9
  • Juniper JunOS 12.3R12
    cpe:2.3:o:juniper:junos:12.3r12
  • Juniper JunOS 12.3x48 D10
    cpe:2.3:o:juniper:junos:12.3x48:d10
  • Juniper JunOS 12.3x48 D15
    cpe:2.3:o:juniper:junos:12.3x48:d15
  • Juniper Junos 12.3X48 D25
    cpe:2.3:o:juniper:junos:12.3x48:d25
  • cpe:2.3:o:juniper:junos:12.3x48:d30
    cpe:2.3:o:juniper:junos:12.3x48:d30
  • cpe:2.3:o:juniper:junos:12.3x48:d35
    cpe:2.3:o:juniper:junos:12.3x48:d35
  • cpe:2.3:o:juniper:junos:12.3x48:d40
    cpe:2.3:o:juniper:junos:12.3x48:d40
  • cpe:2.3:o:juniper:junos:12.3x48:d45
    cpe:2.3:o:juniper:junos:12.3x48:d45
  • cpe:2.3:o:juniper:junos:12.3x48:d50
    cpe:2.3:o:juniper:junos:12.3x48:d50
  • cpe:2.3:o:juniper:junos:12.3x48:d55
    cpe:2.3:o:juniper:junos:12.3x48:d55
  • cpe:2.3:o:juniper:junos:12.3x48:d60
    cpe:2.3:o:juniper:junos:12.3x48:d60
  • cpe:2.3:o:juniper:junos:12.3x48:d65
    cpe:2.3:o:juniper:junos:12.3x48:d65
  • cpe:2.3:o:juniper:junos:12.3x48:d70
    cpe:2.3:o:juniper:junos:12.3x48:d70
  • cpe:2.3:o:juniper:junos:12.3x48:d75
    cpe:2.3:o:juniper:junos:12.3x48:d75
  • Juniper JUNOS 14.1X53
    cpe:2.3:o:juniper:junos:14.1x53
  • Juniper JunOS 14.1x53 D10
    cpe:2.3:o:juniper:junos:14.1x53:d10
  • Juniper JunOS 14.1x53 D15
    cpe:2.3:o:juniper:junos:14.1x53:d15
  • Juniper JunOS 14.1x53 D16
    cpe:2.3:o:juniper:junos:14.1x53:d16
  • Juniper JunOS 14.1x53 D25
    cpe:2.3:o:juniper:junos:14.1x53:d25
  • Juniper JunOS 14.1x53 D26
    cpe:2.3:o:juniper:junos:14.1x53:d26
  • Juniper Junos 14.1X53 D27
    cpe:2.3:o:juniper:junos:14.1x53:d27
  • Juniper Junos 14.1X53 D30
    cpe:2.3:o:juniper:junos:14.1x53:d30
  • Juniper Junos 14.1X53 D35
    cpe:2.3:o:juniper:junos:14.1x53:d35
  • Juniper JunOS 14.1x53 D40
    cpe:2.3:o:juniper:junos:14.1x53:d40
  • Juniper JunOS 14.1X53 D45
    cpe:2.3:o:juniper:junos:14.1x53:d45
  • Juniper JUNOS 14.1X53 D48
    cpe:2.3:o:juniper:junos:14.1x53:d48
  • cpe:2.3:o:juniper:junos:15.1
    cpe:2.3:o:juniper:junos:15.1
  • Juniper Junos 15.1 A1
    cpe:2.3:o:juniper:junos:15.1:a1
  • Juniper JunOS 15.1 F1
    cpe:2.3:o:juniper:junos:15.1:f1
  • Juniper JunOS 15.1 F2
    cpe:2.3:o:juniper:junos:15.1:f2
  • Juniper JunOS 15.1 F2-s1
    cpe:2.3:o:juniper:junos:15.1:f2-s1
  • Juniper Junos 15.1 F2-S2
    cpe:2.3:o:juniper:junos:15.1:f2-s2
  • Juniper Junos 15.1 F2-S3
    cpe:2.3:o:juniper:junos:15.1:f2-s3
  • Juniper Junos 15.1 F2-S4
    cpe:2.3:o:juniper:junos:15.1:f2-s4
  • Juniper Junos 15.1 F3
    cpe:2.3:o:juniper:junos:15.1:f3
  • Juniper Junos 15.1 F4
    cpe:2.3:o:juniper:junos:15.1:f4
  • Juniper Junos 15.1 F5
    cpe:2.3:o:juniper:junos:15.1:f5
  • Juniper JUNOS 15.1 F6
    cpe:2.3:o:juniper:junos:15.1:f6
  • Juniper JUNOS 15.1 F6-S3
    cpe:2.3:o:juniper:junos:15.1:f6-s3
  • Juniper Junos 15.1 R1
    cpe:2.3:o:juniper:junos:15.1:r1
  • Juniper JunOS 15.1 R2
    cpe:2.3:o:juniper:junos:15.1:r2
  • Juniper Junos 15.1 R3
    cpe:2.3:o:juniper:junos:15.1:r3
  • Juniper JunOS 15.1 R4
    cpe:2.3:o:juniper:junos:15.1:r4
  • Juniper Junos 15.1 R4-S9
    cpe:2.3:o:juniper:junos:15.1:r4-s9
  • Juniper JunOS 15.1 R5
    cpe:2.3:o:juniper:junos:15.1:r5
  • Juniper JunOS 15.1 R6
    cpe:2.3:o:juniper:junos:15.1:r6
  • Juniper Junos 15.1 R6-S6
    cpe:2.3:o:juniper:junos:15.1:r6-s6
  • Juniper JUNOS 15.1 R7-S1
    cpe:2.3:o:juniper:junos:15.1:r7-s1
  • Juniper JUNOS 15.1 R7-S2
    cpe:2.3:o:juniper:junos:15.1:r7-s2
  • Juniper JUNOS 15.1 R7-S3
    cpe:2.3:o:juniper:junos:15.1:r7-s3
  • cpe:2.3:o:juniper:junos:15.1x49
    cpe:2.3:o:juniper:junos:15.1x49
  • Juniper JunOS 15.1x49 D10
    cpe:2.3:o:juniper:junos:15.1x49:d10
  • cpe:2.3:o:juniper:junos:15.1x49:d100
    cpe:2.3:o:juniper:junos:15.1x49:d100
  • cpe:2.3:o:juniper:junos:15.1x49:d110
    cpe:2.3:o:juniper:junos:15.1x49:d110
  • cpe:2.3:o:juniper:junos:15.1x49:d120
    cpe:2.3:o:juniper:junos:15.1x49:d120
  • cpe:2.3:o:juniper:junos:15.1x49:d130
    cpe:2.3:o:juniper:junos:15.1x49:d130
  • cpe:2.3:o:juniper:junos:15.1x49:d140
    cpe:2.3:o:juniper:junos:15.1x49:d140
  • Juniper JunOS 15.1x49 D150
    cpe:2.3:o:juniper:junos:15.1x49:d150
  • cpe:2.3:o:juniper:junos:15.1x49:d160
    cpe:2.3:o:juniper:junos:15.1x49:d160
  • Juniper JunOS 15.1x49 D20
    cpe:2.3:o:juniper:junos:15.1x49:d20
  • Juniper JunOS 15.1X49 D30
    cpe:2.3:o:juniper:junos:15.1x49:d30
  • Juniper Junos 15.1X49 D35
    cpe:2.3:o:juniper:junos:15.1x49:d35
  • Juniper JunOS 15.1X49 D40
    cpe:2.3:o:juniper:junos:15.1x49:d40
  • Juniper JunOS 15.1X49 D45
    cpe:2.3:o:juniper:junos:15.1x49:d45
  • Juniper JunOS 15.1X49 D50
    cpe:2.3:o:juniper:junos:15.1x49:d50
  • Juniper JunOS 15.1X49 D55
    cpe:2.3:o:juniper:junos:15.1x49:d55
  • Juniper JunOS 15.1X49 D60
    cpe:2.3:o:juniper:junos:15.1x49:d60
  • Juniper JunOS 15.1X49 D65
    cpe:2.3:o:juniper:junos:15.1x49:d65
  • Juniper JunOS 15.1X49 D70
    cpe:2.3:o:juniper:junos:15.1x49:d70
  • Juniper JunOS 15.1X49 D75
    cpe:2.3:o:juniper:junos:15.1x49:d75
  • Juniper JunOS 15.1X49 D80
    cpe:2.3:o:juniper:junos:15.1x49:d80
  • cpe:2.3:o:juniper:junos:15.1x49:d90
    cpe:2.3:o:juniper:junos:15.1x49:d90
  • cpe:2.3:o:juniper:junos:15.1x53
    cpe:2.3:o:juniper:junos:15.1x53
  • Juniper Junos 15.1X53 D20
    cpe:2.3:o:juniper:junos:15.1x53:d20
  • Juniper Junos 15.1X53 D21
    cpe:2.3:o:juniper:junos:15.1x53:d21
  • Juniper JunOS 15.1X53 D210
    cpe:2.3:o:juniper:junos:15.1x53:d210
  • cpe:2.3:o:juniper:junos:15.1x53:d230
    cpe:2.3:o:juniper:junos:15.1x53:d230
  • cpe:2.3:o:juniper:junos:15.1x53:d231
    cpe:2.3:o:juniper:junos:15.1x53:d231
  • cpe:2.3:o:juniper:junos:15.1x53:d232
    cpe:2.3:o:juniper:junos:15.1x53:d232
  • cpe:2.3:o:juniper:junos:15.1x53:d233
    cpe:2.3:o:juniper:junos:15.1x53:d233
  • cpe:2.3:o:juniper:junos:15.1x53:d234
    cpe:2.3:o:juniper:junos:15.1x53:d234
  • cpe:2.3:o:juniper:junos:15.1x53:d235
    cpe:2.3:o:juniper:junos:15.1x53:d235
  • cpe:2.3:o:juniper:junos:15.1x53:d236
    cpe:2.3:o:juniper:junos:15.1x53:d236
  • Juniper JunOS 15.1X53 D25
    cpe:2.3:o:juniper:junos:15.1x53:d25
  • Juniper Junos 15.1X53 D30
    cpe:2.3:o:juniper:junos:15.1x53:d30
  • Juniper Junos 15.1X53 D32
    cpe:2.3:o:juniper:junos:15.1x53:d32
  • Juniper Junos 15.1X53 D33
    cpe:2.3:o:juniper:junos:15.1x53:d33
  • Juniper Junos 15.1X53 D34
    cpe:2.3:o:juniper:junos:15.1x53:d34
  • Juniper JunOS 15.1X53 D40
    cpe:2.3:o:juniper:junos:15.1x53:d40
  • Juniper JunOS 15.1X53 D45
    cpe:2.3:o:juniper:junos:15.1x53:d45
  • Juniper JUNOS 15.1x53 D495
    cpe:2.3:o:juniper:junos:15.1x53:d495
  • cpe:2.3:o:juniper:junos:15.1x53:d52
    cpe:2.3:o:juniper:junos:15.1x53:d52
  • cpe:2.3:o:juniper:junos:15.1x53:d55
    cpe:2.3:o:juniper:junos:15.1x53:d55
  • Juniper Junos 15.1x53 D56
    cpe:2.3:o:juniper:junos:15.1x53:d56
  • cpe:2.3:o:juniper:junos:15.1x53:d59
    cpe:2.3:o:juniper:junos:15.1x53:d59
  • cpe:2.3:o:juniper:junos:15.1x53:d590
    cpe:2.3:o:juniper:junos:15.1x53:d590
  • Juniper JunOS 15.1X53 D60
    cpe:2.3:o:juniper:junos:15.1x53:d60
  • Juniper JunOS 15.1X53 D61
    cpe:2.3:o:juniper:junos:15.1x53:d61
  • Juniper JunOS 15.1X53 D62
    cpe:2.3:o:juniper:junos:15.1x53:d62
  • Juniper JunOS 15.1X53 D63
    cpe:2.3:o:juniper:junos:15.1x53:d63
  • cpe:2.3:o:juniper:junos:15.1x53:d64
    cpe:2.3:o:juniper:junos:15.1x53:d64
  • cpe:2.3:o:juniper:junos:15.1x53:d65
    cpe:2.3:o:juniper:junos:15.1x53:d65
  • cpe:2.3:o:juniper:junos:15.1x53:d66
    cpe:2.3:o:juniper:junos:15.1x53:d66
  • cpe:2.3:o:juniper:junos:15.1x53:d67
    cpe:2.3:o:juniper:junos:15.1x53:d67
  • cpe:2.3:o:juniper:junos:15.1x53:d68
    cpe:2.3:o:juniper:junos:15.1x53:d68
  • Juniper JunOS 15.1X53 D70
    cpe:2.3:o:juniper:junos:15.1x53:d70
  • Juniper JUNOS 16.1
    cpe:2.3:o:juniper:junos:16.1
  • Juniper JunOS 16.1 R1
    cpe:2.3:o:juniper:junos:16.1:r1
  • Juniper JunOS 16.1 R2
    cpe:2.3:o:juniper:junos:16.1:r2
  • Juniper JunOS 16.1 R3
    cpe:2.3:o:juniper:junos:16.1:r3
  • Juniper Junos 16.1 R3-S10
    cpe:2.3:o:juniper:junos:16.1:r3-s10
  • cpe:2.3:o:juniper:junos:16.1:r3-s11
    cpe:2.3:o:juniper:junos:16.1:r3-s11
  • Juniper JunOS 16.1 R4
    cpe:2.3:o:juniper:junos:16.1:r4
  • cpe:2.3:o:juniper:junos:16.1:r5
    cpe:2.3:o:juniper:junos:16.1:r5
  • cpe:2.3:o:juniper:junos:16.1:r6
    cpe:2.3:o:juniper:junos:16.1:r6
  • Juniper Junos 16.1 R7
    cpe:2.3:o:juniper:junos:16.1:r7
  • Juniper JUNOS 16.2
    cpe:2.3:o:juniper:junos:16.2
  • Juniper JunOS 16.2 R1
    cpe:2.3:o:juniper:junos:16.2:r1
  • Juniper JunOS 16.2 R2
    cpe:2.3:o:juniper:junos:16.2:r2
  • Juniper Junos 16.2 R2-S1
    cpe:2.3:o:juniper:junos:16.2:r2-s1
  • Juniper JUNOS 16.2 R2-S2
    cpe:2.3:o:juniper:junos:16.2:r2-s2
  • Juniper Junos 16.2 R2-S5
    cpe:2.3:o:juniper:junos:16.2:r2-s5
  • Juniper JUNOS 16.2 R2-S6
    cpe:2.3:o:juniper:junos:16.2:r2-s6
  • Juniper JUNOS 16.2 R2-S7
    cpe:2.3:o:juniper:junos:16.2:r2-s7
  • Juniper JUNOS 16.2R2-S8
    cpe:2.3:o:juniper:junos:16.2:r2-s8
  • Juniper JUNOS 17.1
    cpe:2.3:o:juniper:junos:17.1
  • Juniper JunOS 17.1 R1
    cpe:2.3:o:juniper:junos:17.1:r1
  • Juniper Junos 17.1 R2-S1
    cpe:2.3:o:juniper:junos:17.1:r2-s1
  • Juniper JUNOS 17.1 R2-S10
    cpe:2.3:o:juniper:junos:17.1:r2-s10
  • Juniper JUNOS 17.1 R2-S2
    cpe:2.3:o:juniper:junos:17.1:r2-s2
  • Juniper JUNOS 17.1 R2-S3
    cpe:2.3:o:juniper:junos:17.1:r2-s3
  • Juniper JUNOS 17.1 R2-S4
    cpe:2.3:o:juniper:junos:17.1:r2-s4
  • Juniper JUNOS 17.1 R2-S5
    cpe:2.3:o:juniper:junos:17.1:r2-s5
  • Juniper JUNOS 17.1 R2-S6
    cpe:2.3:o:juniper:junos:17.1:r2-s6
  • Juniper Junos 17.1 R2-S7
    cpe:2.3:o:juniper:junos:17.1:r2-s7
  • Juniper JUNOS 17.2
    cpe:2.3:o:juniper:junos:17.2
  • cpe:2.3:o:juniper:junos:17.2:r1
    cpe:2.3:o:juniper:junos:17.2:r1
  • Juniper JUNOS 17.2 R1-S2
    cpe:2.3:o:juniper:junos:17.2:r1-s2
  • Juniper JUNOS 17.2 R1-S4
    cpe:2.3:o:juniper:junos:17.2:r1-s4
  • Juniper Junos 17.2 R1-S7
    cpe:2.3:o:juniper:junos:17.2:r1-s7
  • cpe:2.3:o:juniper:junos:17.2:r2
    cpe:2.3:o:juniper:junos:17.2:r2
  • Juniper JUNOS 17.2 R2-S6
    cpe:2.3:o:juniper:junos:17.2:r2-s6
  • Juniper JUNOS 17.3
    cpe:2.3:o:juniper:junos:17.3
  • cpe:2.3:o:juniper:junos:17.3:r1
    cpe:2.3:o:juniper:junos:17.3:r1
  • Juniper Junos 17.3 R2
    cpe:2.3:o:juniper:junos:17.3:r2
  • Juniper JUNOS 17.3 R2-S1
    cpe:2.3:o:juniper:junos:17.3:r2-s1
  • Juniper JUNOS 17.3R2-S2
    cpe:2.3:o:juniper:junos:17.3:r2-s2
  • Juniper JUNOS 17.3 R3-S1
    cpe:2.3:o:juniper:junos:17.3:r3-s1
  • Juniper JUNOS 17.3 R3-S2
    cpe:2.3:o:juniper:junos:17.3:r3-s2
  • Juniper JUNOS 17.3 R3-S3
    cpe:2.3:o:juniper:junos:17.3:r3-s3
  • Juniper JUNOS 17.4
    cpe:2.3:o:juniper:junos:17.4
  • Juniper Junos 17.4 R1
    cpe:2.3:o:juniper:junos:17.4:r1
  • Juniper JUNOS 17.4 R1-S1
    cpe:2.3:o:juniper:junos:17.4:r1-s1
  • Juniper JUNOS 17.4 R1-S2
    cpe:2.3:o:juniper:junos:17.4:r1-s2
  • Juniper JUNOS 17.4R1-S4
    cpe:2.3:o:juniper:junos:17.4:r1-s4
  • Juniper Junos 17.4 R2
    cpe:2.3:o:juniper:junos:17.4:r2
  • Juniper JUNOS 17.4 R2-S1
    cpe:2.3:o:juniper:junos:17.4:r2-s1
  • cpe:2.3:o:juniper:junos:17.4:r2-s2
    cpe:2.3:o:juniper:junos:17.4:r2-s2
  • Juniper JUNOS 18.1
    cpe:2.3:o:juniper:junos:18.1
  • cpe:2.3:o:juniper:junos:18.1:r1
    cpe:2.3:o:juniper:junos:18.1:r1
  • Juniper JUNOS 18.1R2
    cpe:2.3:o:juniper:junos:18.1:r2
  • Juniper JUNOS R2-S1
    cpe:2.3:o:juniper:junos:18.1:r2-s1
  • Juniper JUNOS R2-S2
    cpe:2.3:o:juniper:junos:18.1:r2-s2
  • Juniper JUNOS 18.1 R3
    cpe:2.3:o:juniper:junos:18.1:r3
  • Juniper JUNOS 18.1 R3-S2
    cpe:2.3:o:juniper:junos:18.1:r3-s2
  • Juniper JUNOS 18.2
    cpe:2.3:o:juniper:junos:18.2
  • cpe:2.3:o:juniper:junos:18.2:r1
    cpe:2.3:o:juniper:junos:18.2:r1
  • cpe:2.3:o:juniper:junos:18.2:r1-s3
    cpe:2.3:o:juniper:junos:18.2:r1-s3
  • cpe:2.3:o:juniper:junos:18.2:r1-s4
    cpe:2.3:o:juniper:junos:18.2:r1-s4
  • Juniper JUNOS 18.2 R2-S1
    cpe:2.3:o:juniper:junos:18.2:r2-s1
  • Juniper JUNOS 18.2X75
    cpe:2.3:o:juniper:junos:18.2x75
  • Juniper JUNOS 18.2x75 D20
    cpe:2.3:o:juniper:junos:18.2x75:d20
  • Juniper JUNOS 18.3
    cpe:2.3:o:juniper:junos:18.3
  • Juniper JUNOS 18.3 R1
    cpe:2.3:o:juniper:junos:18.3:r1
  • Juniper JUNOS 18.3 R1-S1
    cpe:2.3:o:juniper:junos:18.3:r1-s1
  • Juniper JUNOS 18.3 R1-S2
    cpe:2.3:o:juniper:junos:18.3:r1-s2
  • Juniper JUNOS 18.4
    cpe:2.3:o:juniper:junos:18.4
  • Juniper JunOS 18.4 R1
    cpe:2.3:o:juniper:junos:18.4:r1
  • cpe:2.3:o:juniper:junos:18.4:r1-s1
    cpe:2.3:o:juniper:junos:18.4:r1-s1
CVSS
Base: 4.6
Impact:
Exploitability:
CWE CWE-119
CAPEC
  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
  • Overflow Binary Resource File
    An attack of this type exploits a buffer overflow vulnerability in the handling of binary resources. Binary resources may include music files like MP3, image files like JPEG files, and any other binary file. These attacks may pass unnoticed to the client machine through normal usage of files, such as a browser loading a seemingly innocent JPEG file. This can allow the attacker access to the execution stack and execute arbitrary code in the target process. This attack pattern is a variant of standard buffer overflow attacks using an unexpected vector (binary files) to wrap its attack and open up a new attack vector. The attacker is required to either directly serve the binary content to the victim, or place it in a locale like a MP3 sharing application, for the victim to download. The attacker then is notified upon the download or otherwise locates the vulnerability opened up by the buffer overflow.
  • Buffer Overflow via Symbolic Links
    This type of attack leverages the use of symbolic links to cause buffer overflows. An attacker can try to create or manipulate a symbolic link file such that its contents result in out of bounds data. When the target software processes the symbolic link file, it could potentially overflow internal buffers with insufficient bounds checking.
  • Overflow Variables and Tags
    This type of attack leverages the use of tags or variables from a formatted configuration data to cause buffer overflow. The attacker crafts a malicious HTML page or configuration file that includes oversized strings, thus causing an overflow.
  • Buffer Overflow via Parameter Expansion
    In this attack, the target software is given input that the attacker knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.
  • Buffer Overflow in an API Call
    This attack targets libraries or shared code modules which are vulnerable to buffer overflow attacks. An attacker who has access to an API may try to embed malicious code in the API function call and exploit a buffer overflow vulnerability in the function's implementation. All clients that make use of the code library thus become vulnerable by association. This has a very broad effect on security across a system, usually affecting more than one software process.
  • Buffer Overflow in Local Command-Line Utilities
    This attack targets command-line utilities available in a number of shells. An attacker can leverage a vulnerability found in a command-line utility to escalate privilege to root.
Last major update 11-07-2019 - 16:46
Published 11-07-2019 - 16:15
Last modified 27-07-2019 - 14:15
Back to Top