CVE-2017-1000253
Linux — Linux Kernel PIE Stack Buffer Corruption Vulnerability
Linux · CWE-119 · in CISA KEV since 2024-09-09
EVRS 75 of 100 Urgent
Patch This Cycle
Rank 1,006 of 2,960 tracked
Raised to the floor for a confirmed exploited vulnerability.
Why it scores 75
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and associated with known ransomware campaigns.
- CISA KEVApplied
- RansomwareApplied
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
- This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. For more information, please see
- nvd.nist.gov/…/CVE-2017-1000253
Fixed in
linux -> 3.13.0-57.95 | linux -> 4.0.2-1
Affected versions
- centos
6.06.16.26.36.46.56.66.76.86.97.14067.15037.15117.1611 - enterprise linux
6.06.16.26.36.46.56.66.76.86.97.07.17.27.3 - linux kernel
>= 2.6.25 < 3.2.70>= 3.3 < 3.4.109>= 3.5 < 3.10.77>= 3.11 < 3.12.43>= 3.13 < 3.14.41>= 3.15 < 3.16.35>= 3.17 < 3.18.14>= 3.19 < 3.19.7>= 4.0 < 4.0.2
Remediation
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 7.8 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.107 (95.8th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Known | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2024-09-30 · KEV since 2024 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | None known | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 7.8 (v3.1), assigned by mitre. | Listed | ENISA EUVD |
Description
NVDLinux distributions that have not patched their long-term kernels with https://git.kernel.org/linus/a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (committed on April 14, 2015). This kernel vulnerability was fixed in April 2015 by commit a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (backported to Linux 3.10.77 in May 2015), but it was not recognized as a security threat. With CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE enabled, and a normal top-down address allocation strategy, load_elf_binary() will attempt to map a PIE binary into an address range immediately below mm->mmap_base. Unfortunately, load_elf_ binary() does not take account of the need to allocate sufficient space for the entire binary which means that, while the first PT_LOAD segment is mapped below mm->mmap_base, the subsequent PT_LOAD segment(s) end up being mapped above mm->mmap_base into the are that is supposed to be the "gap" between the stack and the binary.
What CISA says to do