Bug 2223860 (CVE-2021-32256)
| Summary: | CVE-2021-32256 binutils: stack-overflow issue in demangle_type in rust-demangle.c. | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Vipul Nair <vinair> |
| Component: | vulnerability | Assignee: | Nobody <nobody> |
| Status: | CLOSED NOTABUG | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | ailan, desktop-qa-list, fweimer, gdb-bugs, keiths, mcermak, mpolacek, mprchlik, nickc, ohudlick, rjones, sipoyare, virt-maint |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2023-09-29 11:33:16 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2223864, 2223865, 2223866, 2223867, 2223868, 2223869, 2223870, 2223871, 2223872, 2223873, 2223874, 2223875, 2223876, 2223877, 2223878, 2223879, 2223880, 2223903, 2223904, 2223905, 2223906, 2229054, 2229055, 2229056, 2229057 | ||
| Bug Blocks: | 2223887 | ||
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Description
Vipul Nair
2023-07-19 07:13:26 UTC
Notes: 1. The bug is only triggered by attempting to demangle a deliberately malformed string. Properly mangled strings produced by the Rust compiler - or other language compilers - will not trigger this bug. Therefore it is unlikely to ever be encountered by most users. 2. This bug, or a similar one, was reported upstream in the GCC bugzilla system and fixed there. The fix was included in the binutils 2.38 release. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105039 3. The bug triggers a stack exhaustion effect, but not a privilege escalation effect. As such it might conceivably be used a part of a denial of service attack, or to conceal other malicious code in a binary, but that is about it. 4. According to the GNU Binutils' SECURITY.txt document, this bug would not qualify as a security bug - or a CVE - since it cannot threaten the security of a system. Created binutils tracking bugs for this issue: Affects: fedora-all [bug 2229054] Created gdb tracking bugs for this issue: Affects: fedora-all [bug 2229055] Created mingw-binutils tracking bugs for this issue: Affects: fedora-all [bug 2229056] Given Nick's analysis of the bug, does this REALLY qualify as "medium" severity? Can we dispute this? |