CVE-2020-11526: canonical ubuntu_linux Out-of-bounds Read
CVSS: 3.5v2.0LowModified
AliasesUBUNTU-CVE-2020-11526DEBIAN-CVE-2020-11526
Published 15-05-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-11526 is a low (CVSS 3.5) Out-of-bounds Read vulnerability in canonical ubuntu_linux. EPSS estimates a 2.00% chance of exploitation in the next 30 days, higher than 80.4% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
3.5/10
010
Low · v2.0 (NVD)EPSS score
2.00%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 12 · Related 8Timeline
- 15-05-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
libfreerdp/core/update.c in FreeRDP versions > 1.1 through 2.0.0-rc4 has an Out-of-bounds Read.
CVSS metrics
4 scores · 3 sources · 2 versionsLow 2.2Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:LSourcesAll 3 agree
- OSV · DebianEcosystem advisory · calculated2.2LowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
- NVDNIST2.2LowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
Low 3.5Preferred score · NVD (NIST)
AV:N/AC:M/Au:S/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
2.00%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
0.00 pp
From 2.00% on 18-09-2026
18-09-202618-10-2026
EPSS score2.00%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (pub.freerdp.com)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.
- CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
Affected systems
Debian2 products
- freerdp2< 2.1.1+dfsg1-1
- debian_linuxEOL9.0
Ubuntu2 products
- freerdp< 1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.4 | < 1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.2
- freerdp2< 2.1.1+dfsg1-0ubuntu0.18.04.1 | < 2.1.1+dfsg1-0ubuntu0.20.04.1
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 19.10 | 20.04
Freerdp1 product
- freerdp> 1.1.0, < 2.0.0 | 2.0.0 | 2.0.0:rc0 | 2.0.0:rc1 | 2.0.0:rc2 | 2.0.0:rc3 | 2.0.0:rc4
Opensuse1 product
- leapEOL15.1
5 vendors · 7 products
References
13 links- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-97jw-m5w5-xvf9X Refsource CONFIRMREPORTPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
lists.debian.org/debian-lts-announce/2020/08/msg00054.htmlMailing ListX Refsource MLISTThird Party Advisory