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(for 4.9.3) CVE-2018-14464/LMP: Add a missing bounds check
In lmp_print_data_link_subobjs(). This fixes a buffer over-read discovered by Bhargava Shastry, SecT/TU Berlin. Add a test using the capture file supplied by the reporter(s).
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| IP (tos 0xfd,ECT(1), ttl 254, id 45839, offset 0, flags [+, DF, rsvd], proto UDP (17), length 56871, bad cksum fe07 (->ddf0)!) | ||
| 17.8.8.255.701 > 40.184.42.8.12: | ||
| LMPv1, msg-type: unknown, type: 249, Flags: [none], length: 212 | ||
| Data Link Object (12), Class-Type: Unnumbered (3) Flags: [non-negotiable], length: 20 | ||
| Flags: [none] | ||
| Local Interface ID: 2435832538 (0x912fdada) | ||
| Remote Interface ID: 3657433088 (0xda000000) | ||
| Subobject, Type: Interface Switching Type (1), Length: 4 | ||
| Switching Type: Unknown (0) | ||
| Encoding Type: Unknown (0) | ||
| packet exceeded snapshot | ||
| IP (tos 0xfd,ECT(1), ttl 254, id 45839, offset 0, flags [+, DF, rsvd], proto UDP (17), length 56871, bad cksum fe07 (->ddf0)!) | ||
| 17.8.8.255.701 > 40.184.42.8.12: | ||
| LMPv1, msg-type: unknown, type: 249, Flags: [none], length: 212 | ||
| Data Link Object (12), Class-Type: Unnumbered (3) Flags: [non-negotiable], length: 20 | ||
| Flags: [none] | ||
| Local Interface ID: 2435832538 (0x912fdada) | ||
| Remote Interface ID: 3657433088 (0xda000000) | ||
| Subobject, Type: Interface Switching Type (1), Length: 4 | ||
| Switching Type: Unknown (0) | ||
| Encoding Type: Unknown (0) | ||
| packet exceeded snapshot |
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