CVE-2020-14315
CVE-2020-14315 is a critical-severity vulnerability in Daemonology Bsdiff with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 3% (83rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Daemonology Bsdiff
- Published:
- Last modified:
Description
A memory corruption vulnerability is present in bspatch as shipped in Colin Percival’s bsdiff tools version 4.3. Insufficient checks when handling external inputs allows an attacker to bypass the sanity checks in place and write out of a dynamically allocated buffer boundaries.
Frequently asked questions
- What is CVE-2020-14315?
- A memory corruption vulnerability is present in bspatch as shipped in Colin Percival’s bsdiff tools version 4.3. Insufficient checks when handling external inputs allows an attacker to bypass the sanity checks in place and write out of a dynamically allocated buffer boundaries.
- How severe is CVE-2020-14315?
- CVE-2020-14315 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-14315 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-14315?
- CVE-2020-14315 affects Daemonology Bsdiff. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-14315?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2020-14315 published?
- CVE-2020-14315 was published on 2020-09-16 and last updated on 2026-06-17.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1856747
- https://www.openwall.com/lists/oss-security/2020/07/09/2
- https://www.x41-dsec.de/lab/advisories/x41-2020-006-bspatch/
Affected products (1)
- cpe:2.3:a:daemonology:bsdiff:4.3:*:*:*:*:*:*:*
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