CVE-2020-24338
CVE-2020-24338 is a critical-severity vulnerability in Altran Picotcp with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 36% places it in the 98th percentile, indicating an elevated likelihood of exploitation. 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: 36% (98th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Altran Picotcp
- Published:
- Last modified:
Description
An issue was discovered in picoTCP through 1.7.0. The DNS domain name record decompression functionality in pico_dns_decompress_name() in pico_dns_common.c does not validate the compression pointer offset values with respect to the actual data present in a DNS response packet, causing out-of-bounds writes that lead to Denial-of-Service and Remote Code Execution.
Frequently asked questions
- What is CVE-2020-24338?
- An issue was discovered in picoTCP through 1.7.0. The DNS domain name record decompression functionality in pico_dns_decompress_name() in pico_dns_common.c does not validate the compression pointer offset values with respect to the actual data present in a DNS response packet, causing out-of-bounds writes that lead to Denial-of-Service and Remote Code Execution.
- How severe is CVE-2020-24338?
- CVE-2020-24338 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-2020-24338 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 36% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-24338?
- CVE-2020-24338 affects Altran Picotcp. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-24338?
- 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-2020-24338 published?
- CVE-2020-24338 was published on 2020-12-11 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:altran:picotcp:*:*:*:*:*:*:*:*
More vulnerabilities in Altran Picotcp
- CVE-2021-33304 — Critical (CVSS 9.8): Double Free vulnerability in virtualsquare picoTCP v1.7.0 and picoTCP-NG v2.1 in modules/pico_fragments.c in function…
- CVE-2017-1000210 — Critical (CVSS 9.8): picoTCP (versions 1.7.0 - 1.5.0) is vulnerable to stack buffer overflow resulting in code execution or denial of…
- CVE-2020-24341 — Critical (CVSS 9.1): An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The TCP input data processing function in pico_tcp.c…
- CVE-2020-17441 — Critical (CVSS 9.1): An issue was discovered in picoTCP 1.7.0. The code for processing the IPv6 headers does not validate whether the IPv6…
- CVE-2023-30463 — High (CVSS 7.5): Altran picoTCP through 1.7.0 allows memory corruption (and subsequent denial of service) because of an integer overflow…
- CVE-2020-24340 — High (CVSS 7.5): An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The code that processes DNS responses in…
All CVEs affecting Altran Picotcp →
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