Path Traversal in Linux Kernel
CVE-2020-28374
In drivers/target/target_core_xcopy.c in the Linux kernel before 5.10.7, insufficient identifier checking in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are proxied via an attacker-selected backstore.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.063 (93.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.063 · newest: 0.063 · change: 0.000
Affected products
- Linux Kernel
- Debian Linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 32, 33
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.suse.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.7 (Release Notes, Vendor Advisory)
- github.com/torvalds/linux/commit/2896c93811e39d63a4d9b63ccf12a8fbc226e5e4 (Patch, Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- bugzilla.suse.com/attachment.cgi (Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2021/01/13/2 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/01/13/5 (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- packetstormsecurity.com/files/161229/Kernel-Live-Patch-Security-Notice-LSN-0074… (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-28374?
- CVE-2020-28374 is a high-severity vulnerability in Linux Kernel, classified under Path Traversal. CVSS score: 8.1/10. Published 2021-01-13.
- How severe is CVE-2020-28374?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2020-28374 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.