elfutils: An Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174
CVE-2018-18520 is fixed in 4 products on 1 platform, first by elfutils 0.170-0.4ubuntu0.1, released February 8, 2019. It is not reported as exploited. Patch Radar priority: Routine.
An Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174. Although eu-size is intended to support ar files inside ar files, handle_ar in size.c closes the outer ar file before handling all inner entries. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| elfutils · Ubuntu 18.04.6 LTS (bionic) | 0.170-0.4ubuntu0.1 | elfutils 0.170-0.4ubuntu0.1 | Feb 8, 2019 |
| libasm1 · Ubuntu 18.04.6 LTS (bionic) | 0.170-0.4ubuntu0.1 | libasm1 0.170-0.4ubuntu0.1 | Feb 8, 2019 |
| libdw1 · Ubuntu 18.04.6 LTS (bionic) | 0.170-0.4ubuntu0.1 | libdw1 0.170-0.4ubuntu0.1 | Feb 8, 2019 |
| libelf1 · Ubuntu 18.04.6 LTS (bionic) | 0.170-0.4ubuntu0.1 | libelf1 0.170-0.4ubuntu0.1 | Feb 8, 2019 |
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