How severe is CVE-2017-7853?

CVE-2017-7853 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-7853 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-7853?

CVE-2017-7853 affects Gnu Osip. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-7853?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-7853 published?

CVE-2017-7853 was published on 2017-04-13 and last updated on 2026-06-17.

CVE-2017-7853

CVE-2017-7853 is a high-severity vulnerability in Gnu Osip with a CVSS 3.x base score of 7.5. 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-119.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Gnu Osip
Published: 2017-04-13
Last modified: 2026-06-17

Description

In libosip2 in GNU oSIP 4.1.0 and 5.0.0, a malformed SIP message can lead to a heap buffer overflow in the msg_osip_body_parse() function defined in osipparser2/osip_message_parse.c, resulting in a remote DoS.

Frequently asked questions

What is CVE-2017-7853?: In libosip2 in GNU oSIP 4.1.0 and 5.0.0, a malformed SIP message can lead to a heap buffer overflow in the msg_osip_body_parse() function defined in osipparser2/osip_message_parse.c, resulting in a remote DoS.
How severe is CVE-2017-7853?: CVE-2017-7853 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-7853 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-7853?: CVE-2017-7853 affects Gnu Osip. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-7853?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-7853 published?: CVE-2017-7853 was published on 2017-04-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gnu:osip:5.0.0:*:*:*:*:*:*:*

More vulnerabilities in Gnu Osip

CVE-2016-10324 — Critical (CVSS 9.8): In libosip2 in GNU oSIP 4.1.0, a malformed SIP message can lead to a heap buffer overflow in the osip_clrncpy()…
CVE-2016-10326 — High (CVSS 7.5): In libosip2 in GNU oSIP 4.1.0, a malformed SIP message can lead to a heap buffer overflow in the osip_body_to_str()…
CVE-2016-10325 — High (CVSS 7.5): In libosip2 in GNU oSIP 4.1.0, a malformed SIP message can lead to a heap buffer overflow in the _osip_message_to_str()…
CVE-2022-41550 — Medium (CVSS 6.5): GNU oSIP v5.3.0 was discovered to contain an integer overflow via the component osip_body_parse_header.

All CVEs affecting Gnu Osip →

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