CVE-2020-35511: debian debian_linux Buffer Over-read
CVSS: 7.8v3.1HighModified
AliasesopenSUSE-SU-2022:10142-1UBUNTU-CVE-2020-35511DEBIAN-CVE-2020-35511DLA-3238-1DSA-5300-1
Published 23-08-2022Last modified 04-08-2024
Vulnerability summary
CVE-2020-35511 is a high (CVSS 7.8) Buffer Over-read vulnerability in debian debian_linux. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 28.1% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (NVD)EPSS score
0.36%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 23-08-2022PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A global buffer overflow was discovered in pngcheck function in pngcheck-2.4.0(5 patches applied) via a crafted png file.
CVSS metrics
3 scores · 3 sources · 1 versionHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.36%
Chance of exploitation in the next 30 days
Percentile
28%
Versus all other CVEs
30-day change
0.00 pp
From 0.36% on 19-09-2026
19-09-202619-10-2026
EPSS score0.36%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-126Buffer Over-readThe product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.
- CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
Affected systems
Debian2 products
- pngcheck< 3.0.2-2 | < 3.0.3-1~deb11u1 | < 3.0.3-1~deb10u2
- debian_linuxEOL10.0 | 11.0
Libpng1 product
- pngcheck2.4.0
Opensuse1 product
- pngcheck&distro=openSUSE Leap 15.3< 3.0.3-bp153.3.3.1
Suse1 product
- pngcheck&distro=SUSE Package Hub 15 SP3< 3.0.3-bp153.3.3.1
Ubuntu1 product
- pngcheck< 2.3.0-7ubuntu0.16.04.1~esm1 | < 2.3.0-7ubuntu0.18.04.1~esm1 | < 2.3.0-7ubuntu0.20.04.1 | All versions (No fix recorded)
5 vendors · 6 products
References
10 links
- lists.opensuse.org/archives/…Advisory