| Name | CVE-2020-21047 |
| Description | The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3579-1, ELA-962-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| elfutils (PTS) | jessie, jessie (lts) | 0.159-4.2+deb8u2 | fixed |
| stretch (security) | 0.168-1+deb9u1 | vulnerable | |
| stretch (lts), stretch | 0.168-1+deb9u2 | fixed | |
| buster (security), buster, buster (lts) | 0.176-1.1+deb10u1 | fixed | |
| bullseye | 0.183-1 | fixed | |
| bookworm | 0.188-2.1 | fixed | |
| sid, trixie | 0.192-4 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| elfutils | source | jessie | 0.159-4.2+deb8u2 | ELA-962-1 | ||
| elfutils | source | stretch | 0.168-1+deb9u2 | ELA-962-1 | ||
| elfutils | source | buster | 0.176-1.1+deb10u1 | DLA-3579-1 | ||
| elfutils | source | (unstable) | 0.180-1 |
https://sourceware.org/bugzilla/show_bug.cgi?id=25068
https://sourceware.org/git/?p=elfutils.git;a=commit;h=99dc63b10b3878616b85df2dfd2e4e7103e414b8 (elfutils-0.178)