high
7.5
CWE
476
Advisory Published
Updated

CVE-2018-15505: Null Pointer Dereference

First published: Sat Aug 18 2018(Updated: )

An issue was discovered in Embedthis GoAhead before 4.0.1 and Appweb before 7.0.2. An HTTP POST request with a specially crafted "Host" header field may cause a NULL pointer dereference and thus cause a denial of service, as demonstrated by the lack of a trailing ']' character in an IPv6 address.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Mbedthis AppWeb HTTP server<7.0.2
Embedthis GoAhead Web Server<4.0.1
Junos OS Evolved=12.3
Junos OS Evolved=12.3-r1
Junos OS Evolved=12.3-r10
Junos OS Evolved=12.3-r10-s1
Junos OS Evolved=12.3-r10-s2
Junos OS Evolved=12.3-r11
Junos OS Evolved=12.3-r12
Junos OS Evolved=12.3-r12-s1
Junos OS Evolved=12.3-r12-s10
Junos OS Evolved=12.3-r12-s11
Junos OS Evolved=12.3-r12-s12
Junos OS Evolved=12.3-r12-s13
Junos OS Evolved=12.3-r12-s20
Junos OS Evolved=12.3-r12-s3
Junos OS Evolved=12.3-r12-s4
Junos OS Evolved=12.3-r12-s6
Junos OS Evolved=12.3-r12-s8
Junos OS Evolved=12.3x48
Junos OS Evolved=12.3x48-d10
Junos OS Evolved=12.3x48-d15
Junos OS Evolved=12.3x48-d20
Junos OS Evolved=12.3x48-d25
Junos OS Evolved=12.3x48-d30
Junos OS Evolved=12.3x48-d35
Junos OS Evolved=12.3x48-d40
Junos OS Evolved=12.3x48-d45
Junos OS Evolved=12.3x48-d50
Junos OS Evolved=12.3x48-d51
Junos OS Evolved=12.3x48-d55
Junos OS Evolved=12.3x48-d60
Junos OS Evolved=12.3x48-d65
Junos OS Evolved=12.3x48-d66
Junos OS Evolved=12.3x48-d70
Junos OS Evolved=12.3x48-d75
Junos OS Evolved=15.1
Junos OS Evolved=15.1-a1
Junos OS Evolved=15.1-f
Junos OS Evolved=15.1-f1
Junos OS Evolved=15.1-f2
Junos OS Evolved=15.1-f2-s1
Junos OS Evolved=15.1-f2-s2
Junos OS Evolved=15.1-f2-s3
Junos OS Evolved=15.1-f2-s4
Junos OS Evolved=15.1-f3
Junos OS Evolved=15.1-f4
Junos OS Evolved=15.1-f5
Junos OS Evolved=15.1-f5-s7
Junos OS Evolved=15.1-f6
Junos OS Evolved=15.1-f6-s1
Junos OS Evolved=15.1-f6-s10
Junos OS Evolved=15.1-f6-s12
Junos OS Evolved=15.1-f6-s2
Junos OS Evolved=15.1-f6-s3
Junos OS Evolved=15.1-f6-s4
Junos OS Evolved=15.1-f6-s5
Junos OS Evolved=15.1-f6-s6
Junos OS Evolved=15.1-f6-s7
Junos OS Evolved=15.1-f6-s8
Junos OS Evolved=15.1-f6-s9
Junos OS Evolved=15.1-r7
Junos OS Evolved=15.1-r7-s1
Junos OS Evolved=15.1-r7-s10
Junos OS Evolved=15.1-r7-s11
Junos OS Evolved=15.1-r7-s12
Junos OS Evolved=15.1-r7-s2
Junos OS Evolved=15.1-r7-s3
Junos OS Evolved=15.1x49
Junos OS Evolved=15.1x49-d10
Junos OS Evolved=15.1x49-d100
Junos OS Evolved=15.1x49-d110
Junos OS Evolved=15.1x49-d120
Junos OS Evolved=15.1x49-d130
Junos OS Evolved=15.1x49-d131
Junos OS Evolved=15.1x49-d140
Junos OS Evolved=15.1x49-d15
Junos OS Evolved=15.1x49-d150
Junos OS Evolved=15.1x49-d160
Junos OS Evolved=15.1x53
Junos OS Evolved=15.1x53
Junos OS Evolved=15.1x53-d10
Junos OS Evolved=15.1x53-d20
Junos OS Evolved=15.1x53-d21
Junos OS Evolved=15.1x53-d210
Junos OS Evolved=15.1x53-d230
Junos OS Evolved=15.1x53-d231
Junos OS Evolved=15.1x53-d232
Junos OS Evolved=15.1x53-d233
Junos OS Evolved=15.1x53-d234
Junos OS Evolved=15.1x53-d235
Junos OS Evolved=15.1x53-d236
Junos OS Evolved=15.1x53-d237
Junos OS Evolved=15.1x53-d25
Junos OS Evolved=15.1x53-d30
Junos OS Evolved=15.1x53-d31
Junos OS Evolved=15.1x53-d32
Junos OS Evolved=15.1x53-d33
Junos OS Evolved=15.1x53-d34
Junos OS Evolved=15.1x53-d40
Junos OS Evolved=15.1x53-d45
Junos OS Evolved=15.1x53-d47
Junos OS Evolved=15.1x53-d470
Junos OS Evolved=15.1x53-d471
Junos OS Evolved=15.1x53-d48
Junos OS Evolved=15.1x53-d490
Junos OS Evolved=15.1x53-d495
Junos OS Evolved=15.1x53-d50
Junos OS Evolved=15.1x53-d51
Junos OS Evolved=15.1x53-d52
Junos OS Evolved=15.1x53-d55
Junos OS Evolved=15.1x53-d56
Junos OS Evolved=15.1x53-d57
Junos OS Evolved=15.1x53-d58
Junos OS Evolved=15.1x53-d59
Junos OS Evolved=15.1x53-d60
Junos OS Evolved=15.1x53-d61
Junos OS Evolved=15.1x53-d62
Junos OS Evolved=15.1x53-d63
Junos OS Evolved=15.1x53-d64
Junos OS Evolved=15.1x53-d65
Junos OS Evolved=15.1x53-d66
Junos OS Evolved=15.1x53-d67
Junos OS Evolved=15.1x53-d68
Junos OS Evolved=15.1x53-d69
Junos OS Evolved=15.1x53-d70
Junos OS Evolved=16.1
Junos OS Evolved=16.1-r
Junos OS Evolved=16.1-r1
Junos OS Evolved=16.1-r2
Junos OS Evolved=16.1-r3
Junos OS Evolved=16.1-r3-s10
Junos OS Evolved=16.1-r3-s11
Junos OS Evolved=16.1-r3-s8
Junos OS Evolved=16.1-r4
Junos OS Evolved=16.1-r4-s12
Junos OS Evolved=16.1-r4-s2
Junos OS Evolved=16.1-r4-s3
Junos OS Evolved=16.1-r4-s4
Junos OS Evolved=16.1-r4-s6
Junos OS Evolved=16.1-r4-s8
Junos OS Evolved=16.1-r4-s9
Junos OS Evolved=16.1-r7
Junos OS Evolved=16.1-r7-s2
Junos OS Evolved=16.1-r7-s3
Junos OS Evolved=16.1-r7-s4
Junos OS Evolved=16.2
Junos OS Evolved=16.2-r1
Junos OS Evolved=16.2-r1-s6
Junos OS Evolved=16.2-r2
Junos OS Evolved=16.2-r2-s1
Junos OS Evolved=16.2-r2-s2
Junos OS Evolved=16.2-r2-s5
Junos OS Evolved=16.2-r2-s6
Junos OS Evolved=16.2-r2-s7
Junos OS Evolved=16.2-r2-s8
Junos OS Evolved=16.2-r2-s9
Junos OS Evolved=17.1
Junos OS Evolved=17.1-r1
Junos OS Evolved=17.1-r1-s7
Junos OS Evolved=17.1-r2
Junos OS Evolved=17.1-r2-s1
Junos OS Evolved=17.1-r2-s10
Junos OS Evolved=17.1-r2-s11
Junos OS Evolved=17.1-r2-s2
Junos OS Evolved=17.1-r2-s3
Junos OS Evolved=17.1-r2-s4
Junos OS Evolved=17.1-r2-s5
Junos OS Evolved=17.1-r2-s6
Junos OS Evolved=17.1-r2-s7
Junos OS Evolved=17.1-r2-s8
Junos OS Evolved=17.1-r2-s9
Junos OS Evolved=17.2
Junos OS Evolved=17.2-r1
Junos OS Evolved=17.2-r1-s1
Junos OS Evolved=17.2-r1-s2
Junos OS Evolved=17.2-r1-s3
Junos OS Evolved=17.2-r1-s4
Junos OS Evolved=17.2-r1-s5
Junos OS Evolved=17.2-r1-s6
Junos OS Evolved=17.2-r1-s7
Junos OS Evolved=17.2-r1-s8
Junos OS Evolved=17.2-r2
Junos OS Evolved=17.2-r2-s4
Junos OS Evolved=17.2-r2-s6
Junos OS Evolved=17.2-r3
Junos OS Evolved=17.3
Junos OS Evolved=17.3-r1
Junos OS Evolved=17.3-r1-s1
Junos OS Evolved=17.3-r1-s4
Junos OS Evolved=17.3-r2
Junos OS Evolved=17.3-r2-s1
Junos OS Evolved=17.3-r2-s2
Junos OS Evolved=17.3-r2-s3
Junos OS Evolved=17.3-r2-s4
Junos OS Evolved=17.3-r2-s5
Junos OS Evolved=17.3-r3
Junos OS Evolved=17.3-r3
Junos OS Evolved=17.3-r3-s1
Junos OS Evolved=17.3-r3-s2
Junos OS Evolved=17.3-r3-s3
Junos OS Evolved=17.3-r3-s4
Junos OS Evolved=17.4
Junos OS Evolved=17.4-r1
Junos OS Evolved=17.4-r1-s1
Junos OS Evolved=17.4-r1-s2
Junos OS Evolved=17.4-r1-s3
Junos OS Evolved=17.4-r1-s4
Junos OS Evolved=17.4-r1-s5
Junos OS Evolved=17.4-r1-s6
Junos OS Evolved=17.4-r2
Junos OS Evolved=17.4-r2-s1
Junos OS Evolved=17.4-r2-s2
Junos OS Evolved=17.4-r2-s3
Junos OS Evolved=18.1
Junos OS Evolved=18.1-r1
Junos OS Evolved=18.1-r2
Junos OS Evolved=18.1-r2-s1
Junos OS Evolved=18.1-r2-s2
Junos OS Evolved=18.1-r2-s4
Junos OS Evolved=18.1-r3
Junos OS Evolved=18.1-r3-s1
Junos OS Evolved=18.1-r3-s2
Junos OS Evolved=18.1-r3-s3
Junos OS Evolved=18.1-r3-s4

Remedy

https://github.com/embedthis/appweb/commit/16e6979c82297d5fc4f8661e7ada975f51e4dfa9

Remedy

https://github.com/embedthis/appweb/issues/605

Remedy

https://github.com/embedthis/goahead/issues/264

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2018-15505?

    The severity of CVE-2018-15505 is considered moderate due to its potential to cause a denial of service.

  • How do I fix CVE-2018-15505?

    To fix CVE-2018-15505, you should upgrade Embedthis GoAhead to version 4.0.1 or Appweb to version 7.0.2 or later.

  • What types of systems are affected by CVE-2018-15505?

    CVE-2018-15505 affects Embedthis GoAhead versions prior to 4.0.1 and Appweb versions prior to 7.0.2, as well as specific Juniper JUNOS versions.

  • Can CVE-2018-15505 be exploited remotely?

    Yes, CVE-2018-15505 can be exploited remotely through crafted HTTP POST requests.

  • What impact can an attacker have if exploiting CVE-2018-15505?

    An attacker exploiting CVE-2018-15505 could cause a denial of service by triggering a NULL pointer dereference.

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