Use After Free in Gnu Glibc
CVE-2020-1752
A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde expansion was carried out. Directory paths containing an initial tilde followed by a valid username were affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path that, when processed by the glob function, would potentially lead to arbitrary code execution. This was fixed in version 2.32.
Vulnerability class: Use-After-Free
EPSS: 0.005 (42.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Gnu Glibc
- Gnu Libc Glibc — versions Affected: versions 2.14 and later, Fixed: version 2.32
- Netapp Active_iq_unified_manager
- Netapp H410c
- Netapp H410c_firmware
- Netapp Hci_management_node
- Netapp Solidfire
- Netapp Steelstore_cloud_integrated_storage
- Canonical Ubuntu_linux — versions 16.04, 18.04, 19.10
- Debian Debian_linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com
- secalert@redhat.com (Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory)
- secalert@redhat.com (mailing-list)
- secalert@redhat.com (mailing-list)
- secalert@redhat.com (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-1752?
- CVE-2020-1752 is a high-severity vulnerability in Gnu Glibc, classified under Use After Free. CVSS score: 7.0/10. Published 2020-04-30.
- How severe is CVE-2020-1752?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2020-1752 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.