Description
libguestfs before 1.5.23, as used in virt-v2v, virt-inspector 1.5.3 and earlier, and possibly other products, when a raw-format disk image is used, allows local guest OS administrators to read files from the host via a crafted (1) qcow2, (2) VMDK, or (3) VDI header, related to lack of support for a disk format specifier.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | guestfish +13 | 1:1.7.17-17.el6 | RHSA-2011:0586 |
Advisories 1
- RHSA-2011:0586 Red Hat Security Advisory: libguestfs security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- [Libguestfs] 20101022 [PATCH 0/8 v2] Complete fix for CVE-2010-3851. mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=643958
- http://rwmj.wordpress.com/2010/10/23/new-libguestfs-stable-versions/
- [Libguestfs] 20101021 [PATCH 0/2] First part of fix for CVE-2010-3851 mailing-list
- FEDORA-2010-16835 vendor-advisory
- FEDORA-2010-17202 vendor-advisory
- ADV-2010-2963 vdb-entry
- RHSA-2011:0586 vendor-advisory
- 44166 vdb-entry
- 41797 third-party-advisory
- [Libguestfs] 20101019 CVE-2010-3851libguestfs:missing disk format specifier when adding a disk mailing-list
- 42235 third-party-advisory
- ADV-2010-2874 vdb-entry